I'm so confused???

I really don't understand why everyone is so ready to just immediately hate Mr. Han?

We've only seen him do nothing but treat Param with kindness? Some people in a club might have called him a playboy, but is having sex while you're single then falling for someone such an evil thing?

I mean it's possible in the future there will be a """twist""" and he turns out to be an ass, but up to this moment he just seems like a nice person.

Hwi (the red head) on the other hand immediately started with sexual assault during a workout session then threatened to blackmail Param... Param literally saved him as "Blackmailer" in his phone contacts... Like the dude has done some toxic stuff the whole story, but it's fine and romantic because they had sex a few times and blushed?

Is there something wrong with my head that this doesn't make sense to me?
┑(￣Д ￣)┍