We go to the same support group, and today he said something to me that really struck me as insensitive. And tactless. He literally told me at the beginning of our friendship he was not going to abandon me, AND THEN HE FUCKING DID. I am so pissed. Im trying to be forgiving. But it fucking hurts.

Objectively he set a boundary with me. It wasn't because I hurt him at all, though. It's because I started responsibly drinking and having a friend who drinks at all is a trigger for him. Something neither of us could have predicted. And he is mentally ill himself, so he has a lowered capacity for relationships (in a different way than I do). It just sucks. I want to blame him but I know that's wrong. I want to tell him how I feel right this second but I can't. When I see him in group next time... how am I supposed to respond? I want us to go back to being acquaintances, but he wounded me, so it's difficult  and my safe space isn't safe anymore.