When I was about 21 or so I used to work at a day camp every summer. It was basically full of horny counsellors between 16 and 24. We used to have parties every weekend where there was always at least two people that would end up fucking making for an awkward Monday morning at work.
There was this one girl there Lee that really liked me but I was never that interested in her. Then there was this other girl Leah that was like a fucking Amazon woman. I swear she had one of hottest bodies I have ever seen. (6 feet tall, massive tits, tight little ass, etc.) Anyway, she was with another guy at the time so I knew I wasn't getting anywhere there. One night at one of these parties, after quite a few drinks, somehow I ended up in bed with the girl I wasn't crazy about, the one I was crazy about and her boyfriend. We were sorta separated and only 'sharing the bed out of necessity'. I was making out with Lee while Leah was making out with her boyfriend. What made it crazy though, is that all the while I was fingering Leah under the blanket! Neither of the other two had any idea! Needless to say it didn't last too long because as soon as it became difficult for me to subtly get my hands on the her, I realized I was with a girl that I didn't really care for. I stormed out of the room saying that we shouldn't go any further in case we 'jeopardize our friendship'.
To make things even more messed up, I ended up screwing Leah's sister about a month later. Man, I loved that job...