"You'll never guess who I got for you!"

Isolde's eyes are sparkling and sharp, and her tone is one of delight. She is wearing a simple knee length green dress that could do with a good ironing, and her auburn hair is messy. Regardless, she's incredibly hot, Alex thinks. He wonders, not for the first time, what it would be like to fuck her. Her Irish accent and small, lithe body often have a lead role in some of his more filthy fantasies.

"Who?"

Isolde grins and gets closer to him, pulling her phone from her handbag. They are sat on her bed, which is unmade, the duvet folded carelessly back. The floor of her room is strewn with books and magazines. It's strange, Alex thinks, how most of the books are poetry and classical writing, but the magazines are about vacuous celebrities and gossip. Despite being old enough to rent her own place, Isolde still lives with her parents, although fortunately they're on holiday right now. He wonders what they think about the mess in their daughter's room.

She thumbs through a couple of screens on her phone and shows him. He whistles, and feels his cock hardening with sudden excitement.

Nathalie Chapman, the rich girl of the swim team. Isolde had finally got her! The photo had been taken in the girls' changing rooms, and whilst it is slightly over exposed and taken from a low angle (no doubt due to subterfuge) it is still a high quality photo of Nathalie. No doubt about it.

And she is topless.

She is still wearing a tight black skirt, but her white blouse lies on top of her folded towel and she has her bra in her hand. She seems to be talking to someone slightly off-camera. Alex licks his lips as he drinks in the sight of her lovely breasts and pink nipples. They are a nice size, he thinks - not too big, not too small. Just right.

"Good girl, Isolde," he says, grinning. "Paydirt!"

Isolde nods and swipes the images. "It gets better," The next one is Nathalie in only a pair of light blue panties, bent slightly in the process of dropping her skirt. Her legs look smooth.

There's something darkly addictive in the forbidden delight of the voyeur photos. Alex can feel his heart getting faster. Isolde has managed to get photos of plenty of girls for him over the last year, but there is no doubt that Nathalie has been one of the most illusive.

But had Isolde managed to get the most important shot...?

"Come on! Don't keep me in suspense!"

Isolde smiles knowingly and swipes to the next photo. There! Nathalie is stood completely naked, hands behind her head to tuck her curly dark hair into a band, her athletic body totally exposed. It is a full body photo, great quality, and she looks fantastic.

"Look how trim she keeps herself," Isolde gloats. "Completely shaved! Who'd have thought a rich girl like Nathalie Chapman would keep herself so bare?"

"She's beautiful," Alex breathes. He stares at the image a little longer. What he would do to fuck that, he thinks. And the things he would do to her. The dark, filthy things he would do to her.

"How much?"

"Fifty."

"What? You've got to be joking!"

"Hey, this was risky! Do you know what they'd do to me if I got caught taking photos in the girls locker room? And besides, I'll throw this in as an extra."

Isolde pulls a pair of small blue panties from her bag.

"Holy shit! You stole her panties?"

"I thought you'd like them. You're a complete pervert, after all."

"She'll notice they're missing. You'll get caught!"

Isolde shrugs. "That's my problem, not yours. And fuck it, it's not like she can't afford more. Well? Do you want them or not?"

Of course he wants them. Alex opens his wallet and slowly counts out fifty pounds. Isolde takes it greedily and it vanishes into her small fabric purse, which disappears quickly into her bedside drawer. Without hesitation she thumbs a button on her phone, and moments later Alex hears his own ringtone sound.

"That's all the photos of Nathalie," Isolde says.

"What about Emma?"

Isolde sighs. "She's more difficult. Very modest. She always uses a cubicle. This is all I have," Isolde shows him a photo of a blonde girl with a fantastic body wearing a red swimsuit. She shrugs. "You can have that one for free. But there may be a great opportunity coming up to get closer to the girls, if you're interested?"

"What is it?"

"They're going on a trip over the long bank holiday weekend, out to Darkmoor Woods. Apparently Nathalie's family own a remote cabin up by the lake. They invited me along. They were just being polite, I think, but I said yes and asked if I could bring my boyfriend. That's you, by the way. They didn't sound too pleased if I'm being honest, but they still said yes."

"A cabin?" Alex groans. "In the middle of nowhere? Sounds horrible!"

"You're not thinking straight. There's no way a girl like Nathalie is going on a long weekend in the woods without trying to find a moment to do some skinny-dipping. And who knows what other opportunities will come up? You'll be sleeping right next to them!"

Alex reflects. Isolde's right of course. It's far too good an opportunity to pass up. Idly, he wonders once more what Isolde gets out of their arrangement - just kicks? Or was there something more than that in it for the Irish girl?

"Great. Yes. Let's do it," he says. "Say I've offered to drive to the wood, that should warm them up a bit to having me along. We'll have fun with them." He pauses. Isolde's eyes are sparking again, and he allows his eyes to drift down the front of her green, crumpled dress. He wonders what her own breasts are like - small and pert, he imagines. Not at all like Nathalie's.

He still has a boner.

He licks his lips. "Say, Isolde, if I'm meant to be your boyfriend, how about we get some practice in? It's not like we'd make your bed any messier." He places his hand on her leg, just above the knee. Isolde's skin is smooth and exciting, and she smells of honey shampoo.

She pushes him away, amused rather than angry "No way, Alex! You know the deal. No touching me. Now get out of here. Go and wank over the pictures of Nathalie or whatever you need to do, but start digging out your walking boots. We've got a long weekend ahead of us - we're going to the woods!"