The residents of the apartment building I live in call it the horseshoe because of its interesting U shaped design. Basically, it's three sections joined at two 90 degree angles. My apartment is on the inner part of the U, on the corner between two sections which gives me an excellent view into the apartment diagonal to me. Because our windows are so close to each other, my neighbor generally keeps his curtains closed but occasionally he leaves them open and I can get a good look into his apartment.
As far as I can tell my neighbor is single, lives by himself and possibly works from home. He's about the same age as myself (mid 20's) and is neither attractive nor unattractive. Basically, average looking, average height and average build. Not overweight but doesn't give the impression that he's spent any time in the gym and if you saw him on the street you would likely not give him a second glance. Occasionally, I would bump into him and chat in the hall but he certainly wasn't someone I would have been attracted to. In our short conversations I learned his name is Tyler and he's obviously awkward around women. Tyler is always polite but rarely looks me in the eyes which I find a big turnoff since it's a clear sign that he lacks confidence. There have been just a couple of occasions where I saw a female in his apartment but I couldn't tell if it were a friend, relative or something more intimate since I never saw any signs of affection. I had considered the possibility that he might be gay although it was entirely believable that someone with his shy demeaner might be unable to initiate a relationship. He's not physically unattractive so there are surely women who would date him if he would ever try.
One day, I was in my apartment with two of my girlfriends, shooting the breeze and having a few drinks. My one girlfriend, whom I'll call Pam, was sitting on the couch when she excitedly told us to look out the window. Looking over, I could see that Tyler's curtains were open and he was sitting on a cheap easy chair watching porn with his feet on a hassock. He was wearing grey sweatpants, a t-shirt and nothing on his feet. 'He's got his hand on his dick', said Pam and it was easy to see that Tyler did indeed have his hand resting on his crotch. Because of the angle of our apartment I was essentially seeing the back and side of Tyler. His vision was away from us towards the TV but at the angle we were looking, his back wasn't blocking our view of what he was doing with his hands. It was also noted that Tyler had a large container of lotion and a box of tissues on the table next to him. He was clearly prepared for action.