I had to cut connections with a friend cos my ex and him ended up being good buddies, everytime they would hang out he would run his mouth about how shitty of a person I am. My ex also knew there was a possibility dude and I could end up getting together because of our previous history, so he pulled the 'bros before hos' card, just in spite of me. I got over it. Ex is a chump for doing that and homie is an even bigger chump for falling for his game.
I didn't get mad until ex invited my cousin (who is a dude and also my best friend) over to his house and tried to pull the same, "fuck that bitch" shit with him. My cousin caught on and told me, I got mad. Ate a bowl of store brand fruity pebbles and let it go.