We argue about how me and her girlfriends don't get along so she never invite me to anything they do like party or hang out so was wondering like thatseem shady and its been going on 1.5 years and when ever I bring it up she yell and say I need to grow up and get my own friends when I do and she hang with them at times I'm not sure what to continue thinking about this

You need to grow up and get your own friends.