was this SA?

I’m in my junior year now but I was thinking back to 7th grade and remembered about this one boy who was in my art class. for the two terms I had that class with him he’d make comments about my body and he even came over to my table with my friends and would kiss my head and cheek playfully sometimes. one of my friends told me he looked like he was trying to take pictures of me from under the table once but they weren’t sure. after a couple months he’d joke with his friends about my butt and wanting to slap it and all these other comments. his friends even told me about he comments he makes and jokingly told me to “stay away from him”. one time when I got up to leave the class he “tripped” and I felt his hand grope me. after that I made a friend in the class stand behind me and even walk me to my next class. He said and did these things in a jokingly matter and probably even flirty but does it still count as assault…? I never told him to stop either unfortunately and I feel ashamed of that.. I know it’s too late to do anything because he doesn’t go to the same school but I just want to know if my feelings about it are valid I guess..