My friend got a boyfriend around 6 months ago and at the start she would invite me out and I would see her around with him (my boyfriend and her boyfriend are best friends) but a couple of months ago she’s been leaving me out, in school she won’t even look at me sometimes, especially if she’s with her boyfriend, she won’t ask me out unless she has no one else to hang out with and she talks about loads of girls behind their backs and the next day she’ll be hanging out with them. Most of my friends are sly and they leave me out so thats why I’m always with my boyfriend because he has my back no matter what but she’s just being plain rude.

Any advice on how to deal with this ? And I already said it to her and we had a big fight but her back “talking” now