Scoots: I am so sorry for your situation. Please try and take some comfort in knowing that addiction controls him and as much as it hurts, it's not personal.
It really does come down to accepting the addict as is/where is ( and expecting nothing in return) or tying it off. It's when we stay in that hopeful fantasy tween state that we learn the meanning of hell. And in the overwhelming number of cases, pay day never comes.