
Gonna be honest, I don’t think it’s that he feels like he shouldn’t apologize. I think it’s more likely he doesn’t even know he shouldn’t apologize do that in the first place.
Considering he said that he thought he could win him over by getting him things he didn’t have, it’s seems much more likely that he doesn’t know how to fix the relationship rather than him just being stubborn and not wanting to apologize. But for real he just needs to sincerely apologize and change his behavior

You're right, but that's so annoying, it's not like he is some man baby that doesn't know what's right or wrong, he stopped the mobsters from r4ping Dan, so he knows that concept, but he cannot see that is very similar to what he did to Dan (except for the violence)?
Whenever I started feeling 1% empathy towards this dumb b4stard I remember that day he had sex with Dan blindfolded to show Heesung dominance he had over Dan like some kind of dog, cannot imagine Dan forgiving him for that or imagine him telling Dan that he did that.
When Dan said he shouldn't change the way he treats him because he feels that he is bothering Jaekyung.
Jaekyung should've said "No, I will change it cause it was wrong of me to treat you like that, I was the biggest jerk ever, I apologize."but he seems to think he'll never need to apologize.