P. S Not a bad time to be an only child huh?
Most Helpful Girl
Wow, he broke the Guy Code. Whatever happened to 'bros before hos' and all that? Your brother is pretty shitty if he doesn't care about how it makes you feel, also your ex is also pretty shitty, you don't date your ex's brother/cousin/best friend, unless you're okay with causing a falling out. Now that it's established that your brother and ex are scum on earth what can you do about it.
Try to get as much distance from them as possible. If you're living at home, this can be quite difficult, maybe spend more time at a friend's place? Occupy yourself with other things, find things that you enjoy and love to do. Being happy is the best revenge.
This really sucks man, sorry.
Most Helpful Guy
Wow! Your brother is a gigantic ass. He totally broke the #BroCode.
Even friends take it seriously, talk less of an actual biological bro. You need to confront him personally and tell him how you feel about the whole situation, without the girl present.
That girl is playing mind games with you guys, and she might destroy a family If she is not careful. Your bro needs to understand that there are many fishes (chicks) in the ocean (world), he needs to move on from your ex as she could be using him to hurt you.
Talk to him man. Bottling up how you feel won't solve anything.