Mmc is famous, fmc is not and she gets hated on by his fans

Hello!! I’ve been trying to find a book where the fmc is very disliked by her significant others fan because of mainly jealousy and it really messes with her head. An example, is the mmc is always in the spot light, could be an actor singer whatever and he’s married or dating a ‘regular girl’ and their relationship could be public or private but she tends to get a lot of hate and it causes her self esteem issues and she’d hide a large part of it from her significant other or maybe he’s aware and tells her to ignore it.

I’d like a main point of possible for her to just break and he finally realized how bad it is. Thanks!