Drinking problem

My boyfriend and I have been together for a month we see each other every weekend since we both go to school. When we see each other he is always drunk. He drinks to much and when he does he is so disrespectful to me. He tells lots of messed up things and it hurts my feelings even though I act like it doesn't. The next day he will just say I'm sorry and that's it. I don't know how to handle this help?