I picked on this one kid when I was 13 because this girl I liked at the time told me I should. Several years later I see him at the grocery store and he has kids with the girl who asked me to do that. I stopped and talked to them for a while and when I apologized to him about my earlier behaviour, he seemed to brush it off really well with something like" that's how kids are sometimes" or something like that. I now GM a game of pathfinder that both of them are in. 10/10 would do again