When it was an understanding between both parties, it was a lot of fun. We talked about it before hand, and knew that all either of us wanted was a good pounding once or twice a week. We got together to romp in the bed, and then saw each other in class and acted like nothing had ever happened.
But once, there was a guy who was with me just for sex, but *forgot* to tell me. I got wayyyyyy too attached and got my heart broken. That one sucked.