I'm going to call out an acquaintance who makes negative comments about her crush's girlfriend
Is she being petty on someone's relationship?
Oh, she thinks that she is better than his current gf.
You're right to call her out for her behavior. Your acquaintance has no right to pass negative comment about her crush just because he has a gf. It's really petty.
But, he won't really listen to what you have to say, if you present it as I do.
I will not be the one who will say it. You will be the one to do that and good luck friend.