I work in a small key man office condo. It's quiet and there are about half or so of the spaces vacant, which means it's quite peaceful most of the time now. The other two tenants keep less routine hours than I do, one being a guy that is out a great deal and the other a young lady only a couple of years out of college who does interior design work. She spends almost as much time there as I do, but tends to come in much later in the day than I do.

Yesterday I was in my office space and had closed my office door out of habit and was working along quietly doing mainly email responses and writing letters when I heard the young girl come in. She's quiet but I can tell which door is opening, and she walks much softer than the guy does when he comes in. Oh, and I was driving a different vehicle now so she likely didn't recognize me being there. There is another office condo right next door that shares the parking lot so who comes and goes can't always be known by what cars are in the lot.

Now let me tell you about this young girl, whom I'll call Ann. Ann is tall and slim, but with large breasts for her build and an ass that is shaped just right and firm. Nothing moves when she walks. Her skin is naturally dark and she has long dark hair with large brown eyes, sort of looking like she has some American Indian or Caribbean heritage in her. All in all she is a really sexy looking girl that isn't too much younger than me.

So, I'm working along yesterday and I hear Ann come in. I worked about an hour or more and heard her walking around in the common room, use the copier, use the bathroom, make some coffee, etc, and I knew from the way she was humming to herself she thought she was the only person there. At times when there is only one of us here it isn't uncommon for us to lock the front entrance door because there's a dentist office next door and the old folks often forget which door to use and wind up wandering around in our office. So, I felt that Ann had likely locked the door behind her, as I had done, and she felt comfortable that she was the only person there.

It was getting late in the afternoon, far past the hour that the other tenant or I usually show up, and from the way I could hear the music from Ann's office I could tell her door was open to the common room. I hit a stopping point and could stand a stretch anyway, so I got up, opened my office door and strolled out into the common room. From my office, in the rear of the greater space, I walk past Ann's office to get anyplace in the building. Ann's desk sits such that her back is to her office door, and as I approached her office it was apparent that she hadn't heard me come out of my office. It was also apparent that she was leaned back in her chair and looking at her computer screen intently as the music played. I also noticed that her skirt was pulled up above her hips and one hand was busy in her crotch.

I moved towards her office door but kept to one side. She was watching some porn video from the internet and had the juices oozing from her pussy. As one hand pleasured her clit the other hand was massaging a breast. Ann was so intent on the screen that she never noticed me looking in from the doorway. As her hands moved faster and her breathing became more erratic I knew the feelings were building within, and when she threw her head back in the chair I thought she would catch a glimpse of me. I froze for an instant, then quietly moved out of the doorway and back to one side. She hadn't seen or heard me, and in a few moments I heard her moans grow louder and deeper. When she climaxed I moved quietly and quickly back to my office and closed the door as quietly as possible.

Long before I got back to the safe confines of my office my dick had grown hard as a piece of oak, and as tempting as it was I held the urges to bring myself to climax for fear of being discovered.

I waited about ten minutes, made some noise, sent some documents to the printer out in the common room, then exited my office door with no efforts to keep quiet. I noticed the music from Ann's room had subsided, and as I retrieved my documents from the printer she came out and greeted me.

"Hi, I didn't know you were here today. I didn't see your car in the lot. You were quiet as a little mouse in your office. I hope my music didn't bother you."

"No, it was no bother at all, really. I had my iPod playing and I didn't hear a thing. Well, I'm all done for the day, so I'll see you tomorrow."

"Good night, see you later."

That was yesterday. I parked down the street today, slipped in early, have been camped out in my office all day awaiting her arrival, and now let's see what happens. Oh, she's here. Got to go.