I agree with T2. He likes to go to the OW because she is an enabler and he doesn't feel guilty about his drunken behaviour when he's around her. I pray for you and your children, and MOSTLY for him that he ralize that he does have a problem and he is letting it control his life. You sound like a strong woman and he should feel lucky that you still beleive in him.
Dustin
"Anyone who is among the living, has hope." (Eccl 9:4)