It's not unrealistic reaction by ml , you can see it in real life how people some people who act like mannered do something like this when things don't according to them or cause betrayal to them . And it's realistic response as a victim then mc try to pursue him even after that. Only unrealistic thing will be if author try to make them a endgame as a couple .portraying this kind of situation is only ok when your theme is not only a a love dovey webtoon category.
It's not unrealistic reaction by ml , you can see it in real life how people some people who act like mannered do something like this when things don't according to them or cause betrayal to them . And it's realistic response as a victim then mc try to pursue him even after that. Only unrealistic thing will be if author try to make them a endgame as a couple .portraying this kind of situation is only ok when your theme is not only a a love dovey webtoon category.