My brother is a recovering addict, but I don't trust him.
Do you want to speak about it with him?
I would like to speak about it, but I'm not sure if he is reliable.
They are going through a really tough time you should try to be there for him more. At least he is trying to improve his life.
I swear if he does that shit one more time...
I think maybe you can get your parents to mediate, so you can talk to him and work things out.