So some context:

Historically, I've been very close with my brother. I trusted him implicitly, and he was often a person I called when I was in crisis. I did that two weeks ago, and shared a lot of the painful and scary thoughts I'd been having. And then he immediately turned around and shared all of that with my wife. 

If I had been threatening someone, saying I was going to hurt someone or myself, I'd understand why he might do that. Safety always comes first. But I wasn't. There was a lot of anger and pain and rage in what I said, but no threats. But he still decided to share all of it. And as soon as she heard it, my wife said she was leaving. And that of course, triggered a far worse episode. 

Now I have lost my wife, my home, and am at risk of losing my job, all because he betrayed my confidence. And I don't know what to do about it. I've never hated someone the way I hate him. He turned a scary but temporary depressive crisis into the complete collapse of everything that was important to me in my life. And the worst part is, he isn't even sorry. He's made no effort to accept the consequences of what he did.

I'm not going to do something stupid. I'm not even going to spam him with messages about how he's a horrible brother and a horrible person - even though I really want to. But I can't just keep bottling up all of this anger.

It just tears me up that what he did will never matter to him. He doesn't care if I cut him out of my life. He doesn't care if I suffer. He doesn't care at all what happens to me. He's just going to get to keep living his charmed life and sneer as he watches mine fall apart.