This shows that your girlfriend is a groupie, the most loyal and die-hard fan of the star, a little paranoid and won't slap herself. It's nothing. Stars are just her favorite idols, just personal preferences and hobbies. No one who has ever been young will have their own idols when they are young. As long as she doesn't think like a madman and knows how to associate with you normally, live and work together, don't interfere, interfere or bother her. Like it, like it! Play crazy for a while and you'll be fine.