As for Jaguar. Yes there are success stories but unless your guy is willing to admit he has a problem and needs help, that is something you shouldn't even focus on right now. You can't force anyone into treatment. Or to acknowledge they have a problem. It is heartbreaking to love an addict.Trust me, I know. In some twisted way my relationship 'works'. But that is because I detach. I won't even be near him if he is in a bad state. He knows though that he has a problem and he struggles with it and is trying hard to fight it. So I never give up hope. Yet even then I have to face the reality that he may not win it. Some do, some don't. Difficult to predict your outcome.
But there is lots of great advice on this thread. My only wish is that you would step away until he handles the addiction because of the physical abuse. Not all addicts abuse others physically. Remember that.
Take care.