beta
It’s a learned habit from years of neglect and emotional abuse from his parents. Even if he says something, his parents would ignore it and only say what they think then hurt him in the end, so Joon just doesn’t say what he wants anymore in fear that it’ll all just be overlooked and ignored again. He learned that saying nothing is “better” than saying something (thanks to his parents)
It’s his coping mechanism, most likely, and since communication is important in every human relationship, it obviously is going to affect his romantic one with Doha
Btw Dami still pisses me off like boy tf you blushing for