You obviously need to work on your relationship communication, if you have to ask millions of strangers rather than your girlfriend.
Why does my girlfriend talk about celebrity crushes in front of me? It gets annoying and I'm at the point of calling her out
Just tell her it bothers you. If she cares about you at all, she'll stop.
A celebrity crush is just that .. It's fiction .. If you are so threatened by a fictitional crush .. Then perhaps you should back out of this relationship until you are old enough to know the difference between what is a 'threat' and what is not.
So your girlfriend talks about celebrity crushes in front of you, and it annoys you. You are on here complaining about it and want to call her out.
Why not just calmly tell her it bothers you. If you want to be in a relationship you need to be able to talk to one another. If you can't do that then you need to get out of the relationship.
You should break up with her.
Hey you need to lay down the law she is disrespecting you in a big way. Is she doing it to play games and make you jealous? I would comment on how hot other women are and see how she likes it.