
I don't really blame the ex. Uke never really tried to understand Jin, it even looks like he just put up with Jin since Ido is fine with Jin around. Jin already said he never really talk about himself. If he drops facts about himself just like that, I don't think uke will be that excited. Idk, according to his reaction whenever Jin is around, he might just be like "oh uh, that's great!" kind of awkward responses. And I don't actually think he is sad that Jin never really said anything to him, he just felt humiliated knowing it from an ex. I don't think he would care to ask about Jin directly if the ex didn't tell anything to him.
Also I'm not trying to justify whatever Jin's action is in the next chapter, I just see some comments blaming the ex.

Reading this for the first time when I was 15 and mostly don't understand shit from everything I read (I wasn't good w English at the time and don't really understand the overall conversation). I just there for the gays. Second couple still my favorite whether when I read it the first time or after rereading it for the 2nd time now.
I thought of rereading stories I read in my younger days when I don't understand a lot of the plots, but lol, I still don't really understand what this story is really about. The conversation don't really to the point and don't really revealed at all and it's confusing. But that's not what I want to talked about, it's mostly about Lego n Mono.
As I remember, I don't think I thought too much about their relationship. I didn't get it, too focused on second couple case. However after rereading it, I just can't stop crying for Lego who falls easily but never gets the other to fall for him too he longs to find love but always fail, and always act like he can always find another. But whenever I think about it, he might be losing hope for love and just started to think that he is unlovable, that wasn't made for love This makes my heart ache. I need his story to be serialized even tho I know it will never happen :( my boy just wants love :((((
He's hot wtf