Don't let yourself be manipulated.
Try to remember this is his addiction speaking.
You are the "right" one, because you are only responsible for your side of the sidewalk.
You are detaching and not enabling because it is best for you.
He must figure out what is best for him.
When my son was in active addiction, I took a car back that I loaned him
because he broke the agreement and in a very short time there were minor and major dents all over it letting me know he was dangerous in a car. His reaction was to punish me by refusing to speak to me. In addiction they are selfish and can only see their own needs. They then try to punish us. Their behavior can only feel like punishment if we let it.
Hugs to you as you struggle with your beloved son + his addiction. It truly is a family disease. Watching them suffer makes us suffer even when we try so hard to detach.