Most Helpful Guy
I highly suggest talking to him first. A lot of instances like this can be solved if you seriously just sit down and talk. If that doesn't work out just say "I think it's better if we just broke up," or "I think it's better if we start seeing other people." Those are things I PERSONALLY would like to be told to me if my girlfriend was breaking up with me. Though, I will say, maybe he does like you but you're going through a time that every couple goes through. It's called life. Try to talk it through to him, don't just quit.
Most Helpful Girl
Sorry Hun but he will hate you but that's his problem, he is the one acting like a child and you deserve better than that. If you're worried he might become violent I suggest have a friend or family member there when you break up and ask him to move out. Don't have them mint he same room coz that's just awkies but definitely have them there in case he refuses to leave.