I might have just lost my best friend

So, my fest friend did a horrible thing to his partner, he used the fact that she was going to move to another country to cheat on her and not feeling the tiniest bit of remorse. I was really shocked, so i tried telling his girlfriend what was happening, but without giving too much detail to still protect my friend. A couple of hours ago, my friend found out i had something to do with this situation, and he got awfully mad at me, I totally understand this, if I wanted to keep being close to him I should have kept ny mouth shut, but now I feel awful, he's taught me everything i know about life, he was my first love and the person I've been closest with. I'm not looking for advice or anything, I don't even know if he's still mad, since his girlfriend told him that she was the one to ask first, and i just had panicked and answered really vaguely, I just needed to write this out and get it off of my chest