I was groped at my school....please help?

This guy is a jerk. Tell your parents about it this time. And this time, don't hold back, say "NO! We don't have a relationship and you keep your dirty hands off of me!!!!!" Anyway, the idea is to embarr this fool. Do it in front of a crowd. Glare at him. Don't show tears here. Wait until you are away from everyone. If he approaches you again, go tell a teacher immediately. He could get expelled for his behavior.