Id say he has an addiction that makes it hard to say who or what he really feels. The chances are he doesn't know. The problem for you is that he would have to get into recovery for the addiction fog to start to leave but the minute you bring it up, he will accuse you of trying to change him and say stuff like he told you to leave and you knew what you were getting into, stuff like that. The best thing for him would be to work on recovery but only he can make that decision and its not certain that he will ever decide to get better. If you stick with him, you could find yourself going through years of abuse.