yeah, i've felt that before, and will maybe feel that way again. at that time, i have to make a decision to do what i need to do for me and for me, most of the time, that meant no contact. that was just for me, i think that you'll have to find what will work for you. i found that if i didn't listen to the junk, then i wouldn't fall for the junk, so i decided to talk to him only when i was strong enough to talk and stick to my boundaries without being effected by whatever he did or said.
i think that you have to come up with a plan that fits you, you have to decide, what you can take and what you cant, this whole thing depends on how you want to live your life. if his addiction is effecting you then its up to you to make the changes that is needed, so that it won't affect you as bad. sorry and i'm praying that you find a way to feel better soon.