I need a jealous FMC

I need a book to hurt my feelings. Specifically, I need a book where the FMC has to deal with gut-wrenching jealousy while keeping up a normal facade.

Like, their relationship is secret and MMC has to (or chooses to) continue dating/sleeping around, and FMC has to just act like it's fine. Or private yearning over her manwhore best friend. Or she breaks up with him and he starts dating someone else and she hates it.

I greatly prefer RH, but honestly if you've got a MF rec, I'll take it too. I don't care about MM, don't have any triggers (except spiders, which I've recently discovered needs to be specified), and honestly? I barely care if it's good. I just want to feel bad.