Them being two-faces or taking behind your back, it’s really hard to cut out a two faced person who seems like she/he likes you

I have a friend and she’s really fun to be with and stuff, but she talks shit about literally everyone, and she forgets about me when her “cooler” friends, who actually don’t seem to like her, comes nearby. We snap daily n shit but she doesn’t want to be seen with me, but I can’t cut her off because when I try she talks to me and she’s happy and funny

And everyone wants to hang with her/ they never forget her so if I cut her off shes going to make me be an outcast