I had to tell off my former best friend who was like a brother to me. I'm still recovering.
What triggered such a big reaction from you?
I discovered his lies and he promised to stop it but didn't keep his word.
If your friend cannot keep their word, I can see why you would do that. It is okay to move on from people that do not fit in your life anymore.
But he's my bro and I don't know what to do.
If you still care about him, then it's fine to forgive him and continue the relationship. There's nothing wrong with giving him another opportunity to earn your trust.