not sure

at 14 and suffering through the worst of my chronic depression, I had my first boyfriend. I was really insecure and he was a lot cooler and more popular than me. we had made out and done some hand stuff consensually before, but he had a lot of power over me and could manipulate me. at one point, we were on a school trip and sitting together at the back of the bus and he had been upset w me and wasn't talking to me until suddenly he shoved my hand down his pants and I just went w it bc I was shocked and scared. afterward he laughed at me bc of how "bad I was at it" even though it was my first time ever doing that. later on he broke up w me and I found out he sent my nudes to all his friends even though he said he'd deleted them. idk if it counts as assault but I still feel violated 3 years later. I still see him at school and it makes my blood boil but idk what to do. I don't want to report him or anything like that but I want closure. what should I do?