I live in an apartment building, and the other day I walked in on two kids having sex (not just foreplay) in the laundry room. I didn't say anything, I just kinda gasped and walked out. The girl is 13 and the boy is around 15. They were doing it when the room was supposed to be closed, but it's still a pretty public place! I just don't know what to do with what I saw! Should I tell their parents or just leave them be? I wouldn't have a problem if it was in their own units, but I find it disggusting that they did it in a public place where someone could walk in on them. Thoughts?