My girlfriend and I had already been together for a few years when we both started our studies. We couldn't afford our own apartment, so we moved into my father's house, who had separated from my mother a little earlier and moved house.

In the beginning, my girlfriend and he didn't get on at all, there were always arguments about something in the household. At some point, I noticed that they weren't arguing anymore and was a bit surprised at first, but then I accepted the fact that they were suddenly really good together.

One day in the summer semester, I came home much earlier because an exam had been spontaneously canceled. When I came into the house, I could hardly believe my ears because I could clearly hear her moaning. Totally shocked, I snuck into the house to confront her, and I was struck by the sound. Through the glass of the living room door, I saw my own father taking her from behind while she was standing up. Now I was even more shocked and couldn't do anything except sneak out of the house. I was completely confused, partly because it turned me on in a very perfidious way. When I got home later, they acted as if nothing had happened. If I hadn't seen it, I would never have found out. Unable to address the situation, the whole thing went on for over 2 years. I noticed how sex with me was becoming less frequent and I kept seeing them doing it behind my back. In a mixture of humiliation and lust, I just put up with the situation. Also because I knew that I would never have a girlfriend that hot again.