Should I break up with my boyfriend?

This guy is total trouble. You need to break up with him like, yesterday. It shouldn't be too big a deal since you live so far apart. You can tell him that the distance isn't helping and you don't like or appreciate the way he behaves. He will try to guilt you into staying with him, he will threaten all kinds of things. If he does that, tell your parents, and have them tell his parents. The boy has issues and needs some serious, professional help.