People that take their stress and emotions on others (especially whilst using substances as an excuse) almost always progress to physical (or sexual - my parents sex life can be defined as 'consented rape') abuse. I think you should ask yourself how much worse does he need to get to leave him? Would you brush off a black eye if he apologized the next day? Would you accept him forcing himself on you whilst drunk?
I don’t mean to be harsh, but I grew up with an abusive drunk/druggie for a father - he would say and do the most vile things and either 'not remember' when sobered, or still think it was justified (he was the 'victim' and the martyr in all situations). He also has the ‘ingenious’ idea of saying we are all crazy – yes we are ALL insane because we ALL have the same memories, or similar ones…. He never said sorry after either, I don’t know if in the beginning he bothered to or not.
If you give people like that a foot, they'll take a mile - they will think they can get away with it, that you deserve it, and YOU are allowing this to happen. He knows he has you under the thumb; it’s only a matter of time before the pretence of alcohol isn’t used, and YOU will be the one to blame for his words/actions (in his eyes). I know this from experience (mine and my mothers) - my father has blamed his entire marriage problem, his rages and him repeatedly trying to kill my mother on me whilst completely sober countless times (once when he had driven me to the doctors, went in with me and told the doctor everything I was saying was made up - I was actually trying to seek help for some serious issues I have since fucked myself up with, and he knew this. I didn’t actually mention anything about him to the doctor, though I shouldn’t have been surprised that he reacted this way- he disowned my sister for going to therapy to deal with a death, because he was paranoid she would talk about him). He doesn’t think he is an alcoholic (bullshit), he’s also refused anger management and getting help in the past, despite knowing how much he has fucked up his wife and children.
I tell you this because you should be aware of what you may be getting yourself into – the violence only started when they were married and this type of ‘relationship’ is a lot more common then you think.
You may love that person with all your heart, but you can’t make him love or respect you. Think about what will happen if you get married and have children - people like that think they own you when they have a ring on your finger.
If he refuses help now, and doesn’t take your emotions/feelings seriously, then he never will. There’s a reason people use the phrase ‘blinded by love’.