PART 2 - Andrea

I woke up before Simon did the next morning, and I lay there for quite some time thinking about the events of the night before. I had been doubtful, to say the least, when he'd told me about this amazing "Master PC" computer program that he'd gotten hold of. "It lets you do anything you want to other people or yourself", he'd said; "Mental, emotional, or physical changes, anything you can think of, it can do!" Yeah, right. I figured he was playing a game, and that we'd end up going home and pretending that we could control each other's actions and thoughts. And I admit, it was getting me pretty hot. I've always had a liking for dominant sexual partners - nothing silly and overdone, just guys (and the occasional girl) who enjoyed taking the lead in treating me like their "slut" or "whore" or "cunt", and would "make" me suck their cocks, get down on all fours for them, and so on. Nothing I didn't want to do anyway, of course, but I liked talking that way about and during sex. So I was starting to get into this fantasy about "mind control"; I could go along with that, no problem, and we'd just pretend that he'd made my boobs into double D's or whatever.

Then we got home and he proved he was telling the truth, first by turning my hair from short and brown into very long and blonde with a few clicks on the computer and then by giving me an irresistible compulsion to undress (except for my boots and fishnets, of course; that boy was so predictable sometimes!). Well, if I'd been getting a bit hot at the idea of a game, this put me into overdrive. By the end of the evening, I'd had several mind-blowing orgasms, two of which were triggered just by Simon cumming in my mouth or pussy, thanks to Master PC and Simon's thoughtfulness. I think I could safely say that it had been a really, really good night. Although in retrospect I had maybe overdone it with my last computer-enforced instruction to Simon, which had led to him fucking me senseless in the bedroom. Good thing he'd cum eventually, because I think he would have kept going all night if he hadn't.

But that had been hours ago, and all this thinking about the fun we'd had was bringing on a familiar sensation between my legs; when I ran a finger along my slit it came up very wet. After licking it off - I always did enjoy my own taste, though it was best when I could lick it off Simon's cock - I put that hand back down, dipping two fingers into my pussy while rubbing the heel of my hand on my clit. With my other hand, I pushed the covers down to expose Simon fast asleep beside me. He was lying on his back, one arm thrown up over his head while the other dangled over the far side of the bed. His cock, I was happy to see, was already pretty hard - dreaming good dreams, I suppose - so I started stroking it with my free hand, getting it that little bit harder and longer. Simon only shifted in his sleep.

Reluctantly removing my fingers from my pussy, I shifted around to get on my knees and took the head of his cock into my mouth. It was already covered with precum, which I greedily licked off before pushing my lips down his shaft, gripping it at the base with both hands. I quickly got into a rhythm, stroking with my hands while working my mouth up and down as far as I could. I mentally kicked myself for not grabbing my vibrator from the bedside table, because my pussy was feeling really empty right about then. But I wasn't about to stop what I was doing at that point.

Simon must have woken up at some point, because his hands came up to grasp my head as I sucked on his cock. "Oh yeah baby," he murmured, "Just like that." I redoubled my efforts, because I could tell by his grunts and the way his hips were twitching that he was close to cumming. I sealed my lips tight around his cockhead and pumped harder with both hands until I felt him shudder and stiffen. And as the first spurt of salty jizz hit the back of my throat, I was suddenly hit with a powerful orgasm of my own. Part of my mind calmly observed that I should have expected that; after all, Simon had set it up the night before that I'd orgasm when his cum hit me, but I'd really forgotten about that in the heat of the moment. Not that I was complaining! I kept on cumming until the last drops oozed out of Simon's cock into my mouth. It was only then that I could swallow it all down and move up to give Simon a good morning kiss. He gave me a lazy grin as he stroked my back. "Thinking good thoughts m'dear?" he asked.

I snuggled into him. "For some reason sex was on my mind this morning," I answered. "Can't imagine why that would be!"

"Gosh," he answered, "I've got no idea either. But somehow I've got a feeling that the whole day's going to be like that." He gave my ass a light slap. "In the meantime, I'm pretty damn hungry. How about you?"

I was pretty hungry too, so we got out of bed. Simon went to take a shower while I headed for the kitchen. That's when I discovered an unexpected side-effect of the fun the night before: I couldn't put on my dressing gown. When I tried, I was overwhelmed by a stifling feeling of suffocation, and couldn't resist the urge to take it right off again. Clearly, Simon's command was still keeping me from wearing any clothing above the legs. Note to self: unless they're self-limiting, Master PC commands just keep going until and unless specifically cancelled. Fortunately, it was a warm morning, I'm not a particularly shy person, and there was no-one else around anyway. So I just went out to the kitchen as I was to make some coffee and put on some toast, and then went into the study and canceled the leftover commands from the night before. Just a second too late it occurred to me that I should have left the command for me to cum whenever Simon came on me (and for that matter, his trigger phrase for me to deep throat him). No need to remove those - they were fun! But it was too late, and it wouldn't have been the same, somehow, if I'd put them back on myself. Part of the experience, I decided, was letting someone else do those kinds of things to you. Ah well, maybe he'd decide to replace them later. I could always hope!

I didn't cancel the command that kept Simon from wearing anything though. Why shouldn't he get to savour the experience too? I couldn't help but grin when I heard him yelp in surprise from the bathroom after finishing his shower. He came through the kitchen on the way to the study a minute later, start naked. He gave me a cheeky grin as he went by, carrying his bathrobe with him. He came back into the kitchen a moment later with his robe on, and we settled down to breakfast. As we ate, we discussed what we had here and decided on a plan of attack. Once we were done eating, we refilled our coffee mugs and moved back into the study to begin what turned out to be a most educational morning. Simon settled down with the computer, since he had more experience in using Master PC; I'd get more practice later (oh, would I!).

For all of the sexual fun we'd had the night before, we actually started out quite prosaically, by using Master PC to make some general improvements to ourselves. Nothing really drastic for the most part: just increasing our general levels of fitness and making ourselves perfectly healthy. Let me tell you, it's amazing how many little aches and pains you accumulate just by getting older that just blend into the background of your life until you scarcely notice them. But once they were gone, well, what a difference! Simon's slight limp from an old work injury, my slightly blurry eyesight - all gone. We deliberately kept it to things that wouldn't be immediately apparent to other people. We weren't sure how we'd explain it if, for instance, Simon turned up to his next family gathering as a sudden muscle man. Fortunately, I wasn't really that into the muscle man look.

Once all that was taken care of, though, it was time to get a bit more creative. For this part, Simon and I agreed that I'd let him decide what changes should be made in me, and I'd decide what changes he should have. And more importantly, we wouldn't tell the other one what changes we were making. (Sure, some physical stuff would be obvious, but not all of it - stuff like reactions or sensitivity could be a pleasant surprise later). It was a real rush to be doing this with someone that I trusted implicitly, and who trusted me in return. I really wasn't worried that Simon would go mental and power-mad and do things that I wouldn't like. After all, he'd already had the chance to do that if he'd wanted to, right?

He started off by making me wait. He told me to strip off my dressing gown and stand in the middle of the room while he walked around me, looking at me from every angle. Without saying a word, he sat down on the couch with the computer open, and looked me up and down some more. He had a funny expression, like he was trying to keep a big grin off his face. The way he kept shifting around made me think that he had a hard cock underneath his bathrobe. Finally he nodded to himself, like he'd come to a decision, and started tapping on the computer. I just stood there, biting my lip to keep from squealing in excitement. Waiting to see what Simon would do with me, do to me, was one of the hottest things I'd ever experienced.

At first I didn't notice any change. I was already turned on, already had hard nipples, already had a damp pussy. None of that changed. What he'd done wasn't clear until he told me to come over to stand beside him. Once I'd done that, he reached up casually and cupped my right tit in his hand. And I nearly fainted. Just that simple touch felt fantastically erotic. My already considerable level of arousal abruptly shot up, to a level that I wouldn't normally reach without someone spending a good while with their tongue between my legs.

Simon couldn't help the grin now, when he saw my reaction. "I need to test the changes, don't I?" he asked innocently. "Have to make sure I've got it right, you know." I caught my breath and nodded quickly, and almost fell over when he added his other hand onto my other breast, and then started squeezing lightly before moving his attention on to my nipples. "Don't touch yourself!" he ordered as he noticed my hands slipping down between my legs. "You'll spoil the test!"

"Yes, sir," I answered meekly, and returned my hands to my sides. I concentrated on keeping my legs from giving way under me as he explored my breasts and nipples with his hands. I could feel the dampness in my pussy increasing rapidly, along with my heart rate and hard breathing. I'd always liked his appreciation of my breasts, but this was in a whole other league! Even so, I was about to ask him if his test could include something hard between my legs when he leaned forward to take one nipple into his mouth. The feel of his tongue and teeth as he sucked as much of the tit as he could into his mouth tipped me over the edge, and I came hard, leaning on his shoulders for balance.

When I stopped shaking and could stand up straight again, Simon was already back tapping on the computer, and another pulse of excitement ran through me. "What are you doing now?" I asked unsteadily. He just smiled and told me to wait a minute and I'd find out. Then he hit 'enter' and pulled me closer again. This time he went right for my boob with his mouth, sucking and licking on the nipple, nipping on the whole breast, while massaging the other one with his hand. My arousal level spiked hard again - it felt wild, going from 'recovering from orgasm' to 'almost cumming again' in the space of a few seconds - and I wondered what was supposed to be different this time. That became clear in another second or two. The part of my mind that wasn't totally taken up by the sensations coming from my tits noticed that I was feeling really REALLY wet between my legs. Much wetter than usual. And then I actually felt hot, wet trickles running down the inside of my thighs. I couldn't resist reaching down with one hand - Simon either didn't notice or didn't care, he was too busy with my tits - and I discovered my pussy was literally soaking wet, with juices pouring out of me. After slipping into my cunt with almost no resistance because it was so slick, my fingers came back up dripping wet. If I'd been willing to get Simon off my tits I would have wiped the juices on there for him to enjoy, but his mouth and hands felt too good to interrupt, so I licked my fingers clean myself. They seemed to taste even better than usual too, but maybe that was just my frame of mind at the time.

The extent to which Simon had played with how wet I got became really clear when he made me cum again. His mouth and one hand kept on working their magic on my tits, but his other hand moved down to my dripping cunt and without warning at least three fingers sank deep into my hole. When his thumb started working on my clit, I went over the edge again. I could hear myself grunting and moaning loudly as my whole body tensed and shook with another powerful orgasm. And I could feel a sudden gush of liquid from my pussy, soaking my legs and dripping onto the floor until (as I discovered once I came down again) it actually made a puddle on the floorboards. I shouldn't have been surprised by this. Simon had always loved it on those rare occasions that I got so wet that I dripped, so it made sense that he'd use Master PC to ensure that this would now be a regular occurrence - and I don't think I'd ever actually sprayed like that before! Fun, but it might be hard on the furniture.

"So what now?" I asked once I'd caught my breath. I knelt down in front of him and ran my hand over his very obvious erection. "Do I get to play with this now?"

I could see he was tempted, the way he pushed up against my hand. But then he moved my hand away. "Not just yet, I think," he said. "Why don't you go take a quick shower and get dressed so we can go out for a walk and get some coffee? Just throw on something casual. I'll be in to get dressed myself in a minute." He had a little smile on his face as he said all that. Reluctantly standing up, I headed to the bedroom. I saw him return to the computer as I left the room.

Once in the bedroom, I quickly grabbed a few things out of the closet to wear. I went into the bathroom and took the world's fastest shower. While I threw on some clothes on after I dried off, I could hear Simon getting dressed in the bedroom. I was a bit surprised, though, when we met in the hall and he looked me up and down before asking with a smile, "Are you sure you want to go to the café in that?"

"What do you mean?" I asked. I glanced down at my clothes. Nothing unusual really, just what I'd normally wear for a trip to the café and a walk on a weekend morning: a lightweight summer wrap-around dress, white with little roses on it, that plunged very low in the neckline. Of course, I wasn't wearing a bra underneath it - that would be silly! My breasts felt much nicer swinging free under the thin fabric, and I thought the nipples showing through was a nice touch. I had panties on though. Of course I did! Nice lacy black ones that showed through the dress's fabric in the right light. Aside from that, I just threw on a pair of sandals. "Don't you like the sandals?"

He chuckled. "No, it's all good. You look great my dear, as always. Shall we go?"

I laughed and took him by the arm, pressing my tit up against him. "Yes indeed! Let's be off."

Our favourite café was only a short walk away, so we took our time strolling along in the warm summer morning. I was hyper-aware of my boobs jiggling under my dress with every step (it seemed more noticeable than usual today for some reason), and from his sideways glances I could tell that Simon was too. So I made sure to play it up a bit, bouncing a bit more than was strictly necessary and making sure that my nipples stayed good and hard and visible. The dress swishing around my upper thighs felt nicer than usual too, which made me glad that it was a bit of a windy day. With any luck, I might end up flashing my panties at him too. Simon wasn't the only one enjoying the view, either. I caught quite a few looks from others we passed on the street too. The men were mostly appreciative, I think, but a lot of the women seemed a bit annoyed. Not all of them though - I caught at least a few admiring glances from females as well as males. By the time we got to the café I was quite turned on again, and my panties were feeling distinctly damp. For a second I got worried that my new wetness might get out of hand while we were out, but with a moment's thought I realised that I was actually more excited than worried by the prospect.

Much as I normally enjoyed a walk and a coffee with my man, I was actually a bit annoyed that he'd decided we should go out and do that right then, instead of playing more with Master PC at home. So as we were sitting on either side of the small table at the café, I made sure to remind him of what he could be playing with at home. When my dress started to loosen a bit, I didn't tighten it again. Instead, I surreptitiously pulled the neckline a little wider and a little deeper, until I figured Simon could almost but not quite see my areolas and the nipples were almost the last thing holding the fabric together. I made sure to lean forward a lot too, to draw his attention to my breasts. And not just his attention either! As usual when I played like this (which I did a lot, of course. Didn't I?), I attracted other people's eyes too. I loved it when that happened. Feeling like half the people in the café were waiting for my tits to escape from the dress was a real turn-on.

When I wasn't leaning forward to almost-flash my boobs, I lounged back in my chair and stretched my legs out. I saw him (and others) checking them out that way, but it wasn't quite the effect I was wanting. So I hooked my foot under an extra chair and pulled it towards me, then casually rested both feet on the seat, slightly apart, with my knees up. Exactly as I'd hoped, that made my dress slide up my thighs and collect around my waist. From the right angle - Simon's, that is, and at least a couple of people sitting behind him (as I could tell from the "trying hard not to look too obviously" looks from their table) - my damp panties were easily visible. After a few minutes of this, I exaggerated the effect by casually swinging my knees apart and together again as I sipped my coffee. Another rush of excitement ran through me as I did that. I wondered just how visible the wet patch on my panties was. I was sure that it was getting bigger, that's for sure, and I could smell my own arousal in the air. Hopefully Simon could too. And even the cute guy pretending to read something on his phone. Or was he trying to take a picture? Did I mind if he was?

Finishing our coffees and croissants, Simon suggested that we move on. I reluctantly got up and let my dress fall back down over my panties, but at least my boobs were still available to show off. Even the edges of my areolas were visible now, and the hem of the fabric was pretty much literally hanging on my hard nipples. Nice effect, I happily thought to myself. I gave the cashier an eyeful while Simon paid, leaning on my elbows on the counter beside the register.

Rather than heading right home though, Simon suggested we walk through the big park nearby first. That was a bit frustrating, but it was balanced out by the additional opportunities to show myself off a bit more while we walked. And, I reminded myself, there were a lot of secluded corners in the park, nice bits of lawn almost completely hidden in the trees. Some of them didn't get much traffic, and had distinct possibilities for some outdoor fun. Now there was a thought. Suddenly I felt more cheerful about the idea of a walk in the park.

According to plan, then, I steered Simon through the park until we arrived at a lovely little sunlit glade that was almost completely surrounded by thick trees. You could only see to a bench along the path from one narrow alley through the trees. The bench was empty, which I was actually a bit disappointed about, but I figured it would make it easier to get Simon to go along with what I planned if he wasn't feeling all shy.
I had him down on the ground for some heavy kissing and petting pretty damn quick. The feel of his tongue in my mouth, his lips on mine, his hands all over my body through my thin dress had me hotter than a firecracker in a very short time. And judging by his heavy breathing and the hard cock pressing against my leg as I lay on top of him, he was in much the same state.

Looking him in the eye the whole time, I slowly worked myself down until I was sitting on my knees between his legs. Deliberately, slowly, I unzipped and unbuttoned his jeans and pulled them down a bit over his hips (which he helpfully lifted off the ground for this bit of the activity). I had never done this before - given a blowjob or had sex out in public, where I could be seen - and I was literally shaking with excitement and arousal as I freed his beautiful hard cock from his underwear.

The first lick of his precum coated cockhead made his whole body jerk, and I devoted my attention to seriously sucking his cock. As I worked my lips and tongue over him, I could feel the wetness in my own underwear very quickly increase. Why had I never done this before? The only thing that would make it better, I thought, was if there was someone watching me as I did it.

And just as I thought that, Simon suddenly tensed a bit and put his hands on my shoulders. "Andrea," he muttered quickly, "there are a couple of people on the path out there that could see us. Maybe you should stop."

"Uh-uh," I managed over my mouthful of cock. Knowing that there was actually someone back there turned me on even more. Rather than trying to cover up or stop, I shifted position a bit to do some licking and stroking on his cock from the side. By craning my head around, I could just see the people he was talking about. They looked like a couple of university students out for a walk. Boyfriend and girlfriend judging from the way they were holding hands. And just as I set eyes on them, they clearly noticed us and stopped.

A fresh burst of pussy juice started leaking down my legs. No way was I going to stop now - they looked shocked and interested to me. Not the type who'd scream bloody murder and get you in trouble for a bit of innocent outdoor fun! Returning my attention to Simon's cock, I changed position until I was on my hands and knees - perfect position for a doggy-style fuck, I thought briefly. My hands rested on Simon's hips while I did my best to deep throat him. The wind, as I'd hoped, was in just the right position to catch my dress and blow it up onto my ass, which it did quite quickly - exposing my dripping panties to my audience.

Simon snorted a quick laugh. "They've sat down on the bench now. They're staring at your ass like it's the only thing in the world. I think they like what they see! Oh, and now she's rubbing his cock through his pants. He likes that. Are you enjoying this my dear? Sucking my cock out here in the park with some strangers watching you do it?"

Momentarily freeing his cock from my mouth, I gasped out an affirmative response before gulping it down again. I grasped it firmly with one hand and started pumping hard in time with my sucking. Enough pussyfooting around - I wanted his cum and I wanted it now!

Needless to say by that point in the proceedings, it wasn't long until I got what I wanted. Simon grunted and groaned and stiffened, and I felt a hot salty jet of cum shoot into my mouth, followed by several more. And even though I was no longer set to cum when he came on me, the excitement of the situation pushed me over the edge too. My cry of pleasure didn't really make it past the gobs of jism in my mouth, but my pussy clenched up and shook with my orgasm, and a big gush of pussy juices poured out of me, completely soaking my panties (like they hadn't been already!) and pouring down my legs. Good thing my dress had blown up out of the way, or it would have been soaked too.

Once Simon's cock stopped giving me more cum, and my own orgasm had subsided, I sat up with what I'm sure must have been a very self-satisfied expression on my face. My dress had fallen completely open too, leaving my tits exposed to the warm summer sun. I glanced over my shoulder, but our chance voyeurs were gone. I looked back at Simon.

"They left in a bit of a hurry after you came," he answered my unspoken question. "I have a feeling they might be looking for a room. Or maybe they were inspired to find a quiet bit of lawn themselves! They certainly looked like they enjoyed the show. And so did I!"

"Mmm, I could tell," I said, idly stroking his softening penis

He started pulling his clothes back together, and I reluctantly did the same. Good thing it was warm; my legs would dry quickly. I stood up and offered him my hand, pulling him up and into me for a quick kiss. "We'll have to do this again sometime. Soon."

He kissed me on the lips and then on the end of the nose, then took my hand as we started walking home. "It was fun. A bit of a surprise too. I never knew you were such an exhibitionist!" He chuckled a bit, though I didn't see anything particularly funny about what he'd said.

"I've always been a bit of an exhibitionist, you know that!"

"Really?" he answered. "But if that's true, why have we never tried sex in public before? You've never sucked me off like that before, in full public view. Well, where we could be seen, anyway. Not like there was actually a crowd around."

That confused me for a moment. He was right, we'd never done that before. Why was that? I walked along for a while thinking about that. "Well, obviously we've just never really had a chance before. You know, right time, right place, all that. Because obviously I've got no problem at all with showing myself off in public, do I?" I gave him a saucy grin. "You can't have already forgotten how I was sitting in the café, can you? And the distinct lack of anything beyond a single thin layer of fabric over my boobs?" I circled one nipple with my finger (which made my breath catch a bit. Damn, he really had made them more sensitive with Master PC). "Can't miss 'em really, can you?"

Simon laughed and pulled me closer to walk next to him with his arm around my waist. "No, you can't. And it's been a fun morning. But you've never done anything like this with any of your previous boyfriends either, have you?"

"No," I admitted, "but that's mostly because they just weren't up for it. They were always afraid of getting caught, or of not being able to get it up where they might be seen, or something. Except for Justin..." I trailed off with that. Justin had always been after me to dress more revealingly and to be more daring in public. He'd even tried to get me to go down on him in a cinema - more than once - or have sex with him in various secluded but still public places. Why hadn't I ever gone along with that? Something seemed kind of off about this.

"What if I told you that your exhibitionist streak doesn't go back any earlier than this morning, just before you got dressed? And that it's entirely due to me using Master PC on you?"

We walked along in silence for a minute while I digested what he was saying. It couldn't be true, could it? I mean, I knew that I'd always been like this! Still, there was the fact that I'd never actually gone out without a bra under a thin dress before, never deliberately flashed my underwear in public before, and certainly never sucked off a partner in public and cum myself from the excitement of it. And I'd seen what Master PC could do the night before, and that morning.

"Well," I said, taking a deep breath and hugging his arm, "I'd say that that's still hard to believe. Everything in my head tells me that's not true. But if it is true - well, keep it up lover! This has been a fantastic morning. If it's all down to you using Master PC on me, I want to know what you've got in mind next! But you'll still have to prove it to me."

We were coming up to our house now, so Simon unlocked the door and ushered me in. Going straight to the study, I opened up the computer and handed it to him. A few taps on the keyboard later, and it suddenly felt like something clicked into focus in my head. Or maybe out of focus, it was hard to say. But I suddenly realised that Simon was right: I'd never behaved like that in public before because I'd never wanted to. Or possibly just because I'd never had the guts. If I was honest with myself, I'd always liked the idea. I'd come so close to doing what Justin asked a few times, but never quite convinced myself to go all the way. I sat down heavily on the couch.

I have to admit that I was fascinated by the ability of the program to completely re-make my mental state or attitudes. Simon explained that all he'd done was find the settings for things like 'inhibition', 'exhibitionism', and 'self-control' - and turn them either up or down, depending. Aside from uncontrollable urges to fuck or suck the night before, we hadn't really played with anything mental through the program, and Simon told me that he'd been a bit chicken to experiment on himself before he'd told me about it. If you screwed up your own mind somehow, how would you even know? So when he'd been playing with Master PC earlier that morning, after monkeying with - sorry, improving - my boobs and pussy, he'd suddenly thought of this as a great way to test the mental changes possible through the program. A few taps on the computers and voila! One seriously excitable, exhibitionist girlfriend! And a fun time was had by all.

It occurred to me about then that my memories of not being an exhibitionist could have been the false ones created by Master PC and put into my head when in fact I really had always been like that. But that couldn't be true, could it? As Simon had pointed out, the facts of my past behaviour didn't support that idea. I decided that thinking about that concern too much would just give me a headache and make me stressed, so I settled on reminding myself that the whole reason Simon had told me about Master PC was that he trusted me and I trusted him. So I decided to stop worrying and just get on with having fun - and lots of it. I looked over at him tapping away on the computer with an appraising eye. It had been too long since my pussy had had any attention paid to it, and I knew how to fix that problem! Given that I realised I had no intention of closing the curtains on the window before climbing up over Simon for him to give my cunt the licking it deserved, Simon had also clearly reinstated his exhibitionism commands - the idea of people on the street seeing my face as Simon had his tongue up inside me turned me on even more.

I was just about to get up and take the computer away from Simon when his phone rang. It was his boss, calling him in to work. Goddamn, talk about bad timing! In all too short a time, I was alone in the house on a Sunday afternoon with a serious sexual itch and nobody there to scratch it for me. What was I supposed to do now?

++++++++++++++++++++

For a while, I was a good girl. Really, I was! I stayed away from the notebook, I did some straightening up, put in some laundry, watched an episode of Primeval, and just basically kept myself busy. But eventually, as I knew I would, I found myself sitting at the desk with the computer in front of me, staring thoughtfully at the rotating image of myself on the screen and the array of charts and menus and tabs that surrounded it. According to what Simon had said, they detailed pretty much everything there was to know about me - mentally, physically, and emotionally. More to the point, those menus made it possible to change all of those things. Fortunately, for non-technical types like myself, you didn't have to work through the menus. There was a box at the bottom of the screen for typing normal text that Master PC would convert to the actual changes - such as Simon's setting me to orgasm from his cum the night before. You didn't have to figure out weird biochemistry to make that happen; just tell the program to make it so, and it was.

So: where to start? My fingers hovered uncertainly just above the keyboard. I realised that I was feeling both really nervous and incredibly aroused at the same time. Something small, I decided, and physical. I was a lot more leery about the mental and emotional stuff; as Simon had said, it seemed like there was a lot more potential to seriously and permanently screw things up in those areas if you did them to yourself. But physical changes, I figured that as long as I could still work the computer I could change anything back. Right?

So I started experimenting. I swelled, I shrank, I grew taller, I got shorter, stronger, weaker, blonde, brunette, redhead, black hair, went from eighty to eighteen years old. I found that I could control it well enough to turn myself into a pretty good imitation of another person, though you probably could have seen the differences if we were actually standing side by side. The detail and control was amazing. For instance, Master PC offered a lot more in terms of playing with my tits than just cup size. Yes, I could - and did - go from pretty much flat-chested to truly massive boobs that literally rested on the desk as I sat there, but that was just the starting point. I could control firmness, position, nipple size and sensitivity and colour, skin tone and texture, muscle support, you name it. I have to admit that it was a lot of fun to finally find out what huge tits looked and felt like on me, even if I did go back to normal afterwards.

At that point I decided to chuck the overly careful approach and have some fun. I wanted to play! I wanted to feel the same kind of buzz that I had the night before when I'd given Simon an irresistible compulsion to eat me out until I came. And while that started a nice tingle between my legs, I realised that those weren't the bits that really turned me on. No, the bits that really got me going were the times when Simon had used the program on me, changing me and controlling me for his pleasure and enjoyment. Okay, my enjoyment too, yes, but that was the whole point here: I'd always enjoyed a bit of submissive play with a dominant partner, and Master PC took that to the ultimate. Not just playing at being dominated, but really doing it. I couldn't help but slip a finger into my wet pussy at that thought - by that point I was stark naked, because my clothes had just gotten in the way of the experimenting I'd been doing. My finger felt so good down there that I was tempted to keep going, but Master PC was more tempting than an orgasm just then.

As I thought about that, I noticed a number change on one side of the screen - my arousal level, according to the program, was going up. It had started on a nice moderate 36% (and what did the numbers measure, I wondered?) but was now reading 50. Interesting! Curious, I slipped a hand down between my legs to stroke gently over my clit as I tried to recall how I'd felt when Simon had taken control of me the night before, and when I'd given him a blowjob with an audience in the park - and saw the number start climbing slowly and steadily up to 61%. Nice, I decided, but not enough! Clicking on the slider, I nudged it up to 75%, and was rewarded with a wave of heat through my body, and enough moisture leaked out of my pussy that I was glad I'd thought to put a towel on the seat of the chair. It was suddenly rather difficult to think of anything much besides cocks, and pussies, and cocks in my pussy, and cum, and tits, and cum, and and and... and that was fine with me!

As I leaned back in the chair with a finger up my snatch, I realised what I should do next. Aside from going to find Simon and fuck him hard. No, before that, something to do. And he wasn't home anyway. Right. No cock in the house. That could be a problem. Anyway. Where was I? Oh yes. If what was really getting me off here was Simon controlling me with Master PC, then maybe I should give him a bit of a push in that direction. Yes! That was what I should do next!

You see, Simon wasn't really all that forceful a guy normally. He'd play along with my games, calling me his slut and his whore when I started if off for instance, but he rarely initiated that stuff on his own. I know he enjoyed it - he'd told me so himself often enough - but he wasn't comfortable being more assertive. A bit of searching on the computer gave me exactly what I wanted: sliders for things like 'Dominance', 'Assertiveness', and 'Sexual Confidence'. Most of them looked kind of low, so I slid them all up quite a bit. Not all the way - I didn't want to turn him into a megalomaniac asshole, now did I? - but up to maybe 60% or so, up from around 40. For good measure, I typed into the text command box that 'Simon will be confident and comfortable about his sexual fantasies and desires, and will enjoy putting them into action'. That should do it!

What else could I do to spice things up? I didn't really want to play around with myself with the program, or not much anyway - that was Simon's job. But maybe I could improve him a bit, in ways that we'd both enjoy! For instance, it had always annoyed me how guys would have one orgasm and then go soft for a while. Mind you, Simon had always been good about making sure that I got an orgasm too, on those occasions when he shot off too quickly, but still. There had to be a better way. And now there was! Simon quickly acquired the ability to have multiple orgasms and to stay hard after cumming for as long as he wanted to.

Then I had a great idea. In addition to having made him more sexually confident and assertive, what about adding elements that weren't under his conscious control? Like making him produce more precum when he was aroused, and making the precum's scent produce arousal and suggestibility and risk-taking in women? No sooner thought than done; now if he got turned on it should automatically start to get me turned on and reduce my self-control at the same time. Fun! And with his boosted self-confidence, he'd be more likely to take the situation and make the most of it, for our mutual enjoyment.

I felt like a kid in the biggest, coolest candy store in the universe, not sure of where to go next. What would I change about me (or Simon - won't forget him!) to enhance our sex lives? I nudged up my arousal meter a few more notches, just to help with inspiration. That made it easier to think along the right lines. My next idea Simon had already taken care of. He loved playing with my tits, but while I enjoyed it, it didn't do all that much for me. But his modifications from the morning had fixed that problem. The way my tits felt now when he licked and sucked and massaged them - or when I did the same thing, as I was with one hand at that very moment - I'd be happy to have him go for them anytime he wanted to. Pinching my nipple and pulling at my tit felt almost as good as having my clit played with.

Speaking of which, why not crank things up a bit down there too? I know I'd started off saying I didn't want to do too much to myself, but these were just basic improvements. He could add his own touches later. No sooner thought than done! Not only did I make my clit more sensitive than ever, but I told Master PC to make the inside of my pussy almost as sensitive. That'd save myself the effort of reaching down to rub my own clit when Simon's cock was inside me, right? Sliding a finger in there felt fantastic now, even when I didn't do much with it once it was there. I tried to make a mental note to try out my dildos on my new and improved cunt very soon, but I was feeling a bit hazy by that point.

In fact, I'd reached the point of no return: I was going to cum hard and soon. No need for a dildo or vibrator or even a real cock this time. My hands would be quite sufficient, given my jazzed-up body. Pushing the chair back against the wall, I braced my feet up on the edge of the desk. I got my left hand covered in the juices running from my hole and started seriously playing with my tits: squeezing, pulling, pinching the nipples, scratching lightly with my fingernails. It felt fantastic, especially when it was added to the feeling of my other hand working my cunt hard. I had all four fingers buried inside it, pounding my slick hole as fast and hard as I could manage. My eyes were almost shut as I concentrated on the sensations going through my body, and the room was filled with the wet slapping sound of my fingers in my pussy and my increasingly loud grunts and moans. It only took a few seconds of this to push me over the edge. I froze and spasmed with my fingers jammed into my snatch up to the knuckles and my other hand grabbing hard on my left tit. Another big gush of pussy juice sprayed out of me, soaking the towel on the chair and splattering on the floor. It felt awesome.
But it seemed like I had actually sated myself for the time being. When I pulled my dripping fingers back out of my cunt, and released my boob from my own grip, I actually wasn't feeling horny anymore, for the first time that day. What I really felt was hungry and tired. A glance at the clock, and the darkness outside the window, told me that I'd successfully whiled away the whole afternoon and part of the evening with my experimenting. A quick check of my phone found a message from Simon that he'd probably be home late. Bit of a bummer, but like I said, I was actually feeling a bit wiped out by that point, and I totally forgot about the changes I'd made to Simon. I decided that a quick dinner and early bedtime was the best plan. Both of us had to go to work in the morning anyway. Fun was fun, but we still had bills to pay. There'd be time for more play with Master PC later.