
am i the only one that finds dongha irritating for too many chapters now?

No, you're not the only one.
He is really not right in the head. At first, I thought he was a bit tsundere, that he liked Sanho for a while, but didn't know how to say it to him, but in the end, he's just another abuser that author think ot's cool to romantized and try to make us think that being like this is how you should show your feelings.
It's tiring...

exactly like,, i saw someone say in a comment "yall just dont know that ppl in relationships think like that sometimes" when uh,,, they dont??? or at least they shouldn't?? what's the point of getting overly protective and jealous at the point of being abusive when u should actually care for ur partner and respect their freedom and needs

I think that the people that says that has never been in a relationship before.
For having been with an abuser for years, yes some people can reallu think things like that and it's not normal at all! Saying taht you want to lock up your partner so no one wan see them, being overly jealous and possessive isn't cute, it's tiring and scary.
I can get that Dongha wasn't happy Sanho said nothing to him. It can be frightening, having your partner not home when they say they were going to be or be at home at a certain hour, but once they are here, you just say that they don't do that again and just text or call to say "hey I'm alive, I'm there" and that's it. But calling that much and being all creepy and weird and seriously, the sex is scary, (I never understand if Sanho really wants it or not, one moment he will say yes, the other no, it doesn't make any sense.) and seriously, they don't make me feel comfortable.
I never thought this story was super good, but it was entertaining, but now, I'm not sure I want to keep on reading it :/
the way i thought they both had a crush on the blond dude but now they're turning into the side couple