Why do people like Tsundere's? It's strait up just a massive red flag.
People like this in reality who act like this are called "Assholes". Even if they are embarrassed, that only pushes people away. It isn't endearing, it just makes for people questioning everything you do.
There is no "Gap" when it comes to being mean. You don't accept that, you just get grossed out and they think they are bipolar or at least have some kind of mental illness. Being mean, in any way shape or form, is just emotionally abusive.
But people fucking love it. And it just makes me deeply uncomfortable EVERY time I see it.