Responses
like hell he should, it is wrong to hurt someone feelings just cause of what he like or who he is. what the MC did ALL THE TIME! just cause he is gay. fuck this guy. that's not how you show someone you love him, no matter how much bies you are! fuck that! that just an abuse now.
read Jinha childhood and past again, he isn't the kind of guy that can just say "everything all right" and to be honest, the asshole don't deserve it.

There's nothing wrong with being gay or bi or sexually fluid but we all know that it isn't socially accepted by everyone. Some people have a strong bias against queer people. Of course he would be upset. He was just outed in front of the whole school.
Kang Jinha should have tried to comfort him. He knew that Siwon wasn't out. Instead, he's like "Hey, isn't this better?".
I mean, we all know that Siwon is gonna come around. Jinha should have said something like "I know that it's scary but I'm gonna be there with you every step of the way."