He's an addict. Addicts worry more about their addiction than other people.
Addiction is progressive--so unless he really makes huge changes and gets clean for himself, not because you want him too,
the way he is treating you now may be as good as it gets.
Is that good enough for you or do you want more from a relationship?
I'm sorry for your pain, but that seems to be the reality of life with an active user.
There are many stickys at the top of this page with information that will help you understand the situation better.
Take care and best to you. It sounds like you've been through a lot beyond dealing with him.