Should I break up with my boyfriend?

my boyfriend and I have been together for 3 months. He found out I used to drink and party a lot and that's like a deadly sin against his moral system so much that he normally won't have anything to do with such people. He says that he has to hate himself for those thoughts to protect his love for me. I feel really bad that he would feel the need to go so far just to protect those feelings. Would it be better if I just broke up with him and relieved us both of this burden, or do you think we can push through it? It's a really big deal.