I accidentally down voted. :''(((
It okay it happens.
This^ Boys act like this, especially athletic macho boys in highschool. It's just so... Everyday. It's honestly weird to me that people are so pissy about it, it's like "it's just two boys fighting over a love interest, who cares?". Sure, his actions are mean, but the circumstances allow that, he's not going to get along with his love rival. I think he was doing a good job holding back till everything stacked and he JUST NOW blew up, tbh. ╮(￣▽￣)╭
That's why I said understand his situation it's not like its anything new like you said and he didn't do anything bad like most characters from other stories do. It's just I don't like how he blew up its wasn't terrible but like I said it wasn't cool of him especially with that whole scene when he got a bloody nose.
Im okay with Jaejin I don't hate him I have sympathy for his situation really. I just don't like how he's being jerk and taking it out someone who's innocent. I understand how he feels but again that's not cool.