Losing friends after getting into a serious relationship?

exm ♥️
Has this happened to anyone? I feel like it's happening to me and I'm not sure why. They love my boyfriend (they would have no problem letting me know otherwise), I have never nor would I ever ditch them in order to hang out with him. I've never chosen him over them or any of the other typical reasons for friends to dislike a SO. But they've been alienating me a lot lately. Going out together without inviting me, not responding to my text messages, etc etc. and it sucks. 😕 Is this just a normal thing that happens sometimes??