My girlfriend has been swooning over a girl and this upset me. I'm heartbroken over this.?

request a break-up ?? F that you gotta quit acting like a rug and quit letting let walk on you. you tell her "Im F "ing breaking up with you.. You dont do that to ppl, you dont disrespect ppl in front of their face like that, you should of walked over to both of them and dragged her away ... thats BS.... grow some b.alls.