Trueeee, for me they are both wrong, but it seems people is only in Seonjae side, and forgot that Seonjae is a big part of Kanghee insecurity. Lmao, I also hated Kanghee acting like that to Dongha at first, but after seeing his relationship with Seonjae, I suddenly feel like I'm really wrong for judging him without knowing his side. Just imagine, being a relationship to someone and your relationship started as you being a rebound, and later on they said that they doesn't feel anything to that someone anymore, but you really can't tell because his not giving you any assurance, and he didn't do anything whenever your insecurity kicks in.
Exactly! Seonjae's the main reason why Kanghee acted that way all throughout these chapters. Kanghee didn't even get to speak what was on his mind because he was too scared and insecure. Seonjae knew about it all along yet he didn't do anything about it. They need to understand Kanghee's pov even though they're a new character.
Finally someone I can agree with
People being in Seonjae's side doesn't know how relationships should work. Y'all just hate Kanghee just because he appeared later on. Y'all need to read and understand ._.