u/Conscious_Let_3499

tl;dr: am i overreacting for wanting to break up with my girl cus she approached her ex that she cheated on for me?

for context, this was over 6 years ago. a mutual friend of mine had been dating a girl for some time and one way or another, we ended up talking and they broke up and we eventually got together. down the road, he ended up dating my ex after as well. now my girl and her ex go to nyu tg and they apparently ran into eachother tonight. i’m pretty sure she cold approached him for drama bc she does stuff like that, but she sai he claimed i cheated on her. i did not ofc. but it’s all this drama and she’s always talking shit on him and it annoys me. is this worth breaking up over? 24 years old btw