Should FMCs be allowed to hate and scorn their boyfriends when they cheat on them with other girls? I feel like lots of Mangakas have these nasty habits of trying to vilify their female characters for not being these all-loving forgiving women when it comes to their men seeing other women. And I feel like that's wrong, am I the only one?

>Cheats on her boyfriend with a playboy
>Is shocked her boyfriend dumped her to go with another girl
At least some authors are experimenting instead of just reusing and rehashing the same boring trite story