ForLP,
I don't mean to sound harsh but since you have only known this man for 4 months, I would seriously sever all ties and break up with him. This should be the honeymoon phase of your relationship where things are going well. You already see he has some serious problems. I know it is difficult, but you cannot make him change. I was with my AXBF for 3 years and I saw he had some signs of a drinking problem. I wish I had ended things a lot earlier, believe me it just gets worse the longer you hang in there.