If I were you and your BF, I would find new friends. He should have been going to meetings from the first day he got out of rehab.
I feel he will be back in rehab before the end of 6 months. He cannot drink occasionally (as you mentioned in another thread), he can't hang out in bars with old drinking buddies, he needs to make changes in his life and he is doing nothing to get better. Not drinking does not make him "sober", working a program does.