Why is the idea of my classmate having sex is making me feel so uncomfortable?
The reason you feel that way is possibly because you feel that the remark is actually a comment on people’s behavior in general, either a “put-down” or an implied notion that “other people are doing it, why not you”, so you sense that it is either a subtle put-down of them or you. My feeling has always been that I decide what I am going to do and I am not neessarily guided by the behavior of other people. I try to not gossip myself, but I have to admit I enjoy hearing it, but I don’t do anything with it, other then store it in my data banks. I always remember that I am responsible for my own beavior and I have to answer for myself, and the first person I have to answer to is me. I have found no escape from myself, except staying clean. Other people have to answer for themselves, or suffer the eventual consequences.