Bashing UP AND HITTING HELP?

Ok so my previous bf was dumped because he wanted to feel my ***. One of my best guy friends dare this really dirty person in my class to touch mine. I go crazy, wouldn't you? The dirty guy has asked for vaginal haircuts, he said he will make me squirt and for the first time he touched my *** and ran to the toilet . I had the chance to slap him, someone took the metal ruler off me and I got cut deep. Icant hit anyone, I yelled anx screamed at hum and after school he ran to the toilet. I have a big brother but I don't want to tell him. People were recording me, he also has a big cousin same age as my brother but moor tanker(year12) . Should I hit him tmr? I feel disappointed in myself because I didn't hit him and I feel try took advantage of me, although my friends kind of hit him back on the ***, I was so pissed people thought I cried and now the whole school will noe including my ex who's currently in a different relationship. Whatt to do, hit him and show him I'm strong btw I go to a religious school. If I tell on him he might get expelled and I don't want that. What to do please help