Just started reading this series and caught up, and honestly the TL notes are kind of offending me because they often act like this is all a big misunderstanding and they just need to clear it up and all that, but honestly it's hardly a misunderstanding at all? I really don't care that the dude didn't mean to leave the letter out where someone could find it, it doesn't change the fact that this is literally all his fault for blackmailing her in the first place. And he doesn't seem sorry for THAT at all. Like, his attitude towards her in the workplace is the exact same lowkey bullying that he did in high school and she has every right to hate him forever? He quite literally does not deserve her forgiveness right now.
I mean, I'm not saying he's irredeemable and I am 100% sure he thought it was just playful teasing and an excuse to hang out with the girl he likes. But what he did to her was flat out bullying or even an abusive relationship. HE could laugh the letter off as a joke, a funny experience they shared, but SHE was rightfully terrified that it could destroy her life at any moment, which it did. So she could literally never be comfortable around him no matter how nice he thought he was being. At no point has he considered her feelings, ever, and quite frankly he's an asshole.
So before she forgives him, and obviously they will go on to be a couple because that's the kind of story this is, I really want to see him go through a lot of soul searching.
Er... anyway, I don't think the issues between them are nearly as simple as a "misunderstanding" and even when they discover that everything was that jealous girl's fault (obviously) that doesn't even begin to scratch the surface of their dysfunctional relationship, honestly. That wouldn't resolve anything on its own.
Edit: Frankly he doesn't even deserve an explanation from her. She had and has every right to just ghost him.
Edit2: I mean, Jisoo knows exactly what happened and she still hates him years later, which sounds about right to me. Imagine thinking your best friend and this guy were a cute couple and teasing her about it only to find out later that he was BLACKMAILING her into hanging out with him against her will. Jeez.