I've always considered friendship at times to be a stronger tie between two people or groups of people than romantic attraction / love. So i don't like refering to sex between two people that are 'just' friends. But in the past I've had sex on a few occassions with friends (both men and women) and I've just found it to be a very different experience than a normal sexual relationship. The enviroment I was in at the time actually encouraged you to place your mates above your partner. On the occassions I did have sex with a mate I found it a really good experience, there was no worry about how the other person viewed you, I found myself being able to experiment sexually with someone I was really close to but without the pressure of having to maintain a relationship. In short I suppose I used it as a substitute for masturbation. To offer an incident from my own experience, I was slightly drunk one night and chatting with a male friend when we started talking about sex and men being premature. I then bet him that I could make him cum in his trousers (i know it sounds random) which I did manage after a bit of an effort. I just found the whole thing rather funny, strange and different and it was something I did off and on with mates, from then on, although I chose the occassion rather carefully. So what about everybody else, any thoughts?