So, I've seen how people are kind of like trashing on Jiwoo because of what he did to Seojoon. It's understandable, and it's not very nice because, you know - he kind of just went AWOL without telling Seojoon why or what he did (it wasn't Seojoon's fault, anyway).

So, why did Jiwoo leave? In my perspective, I personally felt like he was insecure. He had trauma from his past lover, and obviously, they didn't end well together. Jiwoo had kept it to himself because he didn't want to be Seojoon's burden (with the guy already having busy schedules). Jiwoo's pretty much a pessimist, I think it was shown during the show (but I haven't watched it in a hot second and writing this months after I watched).

Jiwoo's afraid that Seojoon would leave him eventually, like how his ex did. Like he was afraid that Seojoon would finally realize how boring he was (he's not) and leave him, so with this plaguing his mind for a good year was probably tiring. And so he breaks up with Seojoon and ran away because he wanted to protect himself from the larger pain of when Seojoon does end up breaking his heart.

He's just trying to protect himself before it happens even if it won't because he doesn't know the future, he's insecure, he's negative about it, and he just wants to push himself away before it's too late.

So obviously, Seojoon finds him and brings him back and reassures him about it. Like it's fine. Anyway, thanks for reading through my little rant, I just wanna go give him a hug.