He needs AA, his HP, a sponsor, sobriety, and serious effort every day to stay clean
Sorry, I was being general there. NA, of course, would be more in keeping with his addiction.
You don't have control over him so why not change your # and stay clear of him instead?
This is all part of the process. You are seeing his use for what it is...repugnant and undesireable. You are identifying him with the disease. In time, I began to see my XABF as one of those drunk, pawing, arrogant guys at the bar I always hate. The one's who thought spilling beer on a girl was a great way to get her attention. The one's who debated any issue and were loud and rude and got thrown out by the bouncers for bothering the female patrons. I lost all romantic interst in him first, then any interest all together.