Aaa right I forgot about that~
Taejoon at fault here. I know he feel bad at Youngwon for sleeping with Youngwon, but he shouldn't give hope to Youngwon and end up hurting Youngwon too.
(╯°Д °)╯╧╧
But I pity Youngwon tho. Not gonna lie at first I hate him but after the explanation from his side make me a little bit sad cause I can relate to him. (/TДT)/
Yeah i know. But I think taejoon is the most pity here. He was waiting for Yoon almost 3 years and half (since taejoon n youngwon started date 1 year n half) without he knowing about Yoon's status (he still alive or not and possibility for him to died is higher than he alive since he was missing during war). Yoon disappear for without any news about him. Taejoon did waiting for yoon, then he make mistakes. And youngwon make taejoon feel bad. As we can see, youngwon knew taejoon misunderstanding him as Yoon when they were slept. But he just ignore about it and even start the relationship with taejoon. Youngwon thought maybe taejoon will love him more after that. That's why youngwon so insecure when Yoon came back, he knows taejoon still love Yoon back then when they're start the relationship. Taejoon isn't fully move on from Yoon or he even don't think about moving on from Yoon (I think) if he not making the mistake slept with youngwon. He just replace Yoon with youngwon but he still couldn't do it. Because the person he love the most is Yoon. If we think, 3 years and half isn't short term. He even lost his job during his mourning. He did all those things to keep him alive. I won't blame on taejoon because for me, he's the one got hurt the most. But the author focus more on Yoon side, so we don't think too much about what taejoon been through.
If youngwon doesn't know about Taejoon's feeling when they start the relationship I can say I feel bad for youngwon. But because Youngwon aware Taejoon's feeling toward Yoon, I don't actually feel bad for him. Because he should know the consequences of that. We should never put any hope to anyone who is not fully moving on, because at the end it just gonna hurt us. Same like youngwon, he knew Taejoon's feelings but he still give a try about it. For me both is wrong but pity on Youngwon because he just love Taejoon and tried to help him but Taejoon is still not fully move on from Yoon.

In the first place, Taejoon if you really love Yoon then you should not have a relationship with Youngwon. Because of Taejoon decision that all of them suffers. And for me it's not ideal for him to still care about his ex like if you still want to have a relationship with him again then you can take care of him. But the thing is taejoon is the one who severed their relationship first and its quite relatable for him to not care about Yoon anymore and focus on his current relationship. But the way his attitude right now is making Youngwon suffers to. Although I quite disagree with Youngwon ways to gain Taejoon love and the way he's mocking Yoon is making my blood boil too, but after the treatment that he be getting from Taejoon really making me pity for him. Like do you know the feeling of loving someone but they are in love with someone else. Its the worst feeling ever.
Nevertheless, after they reach their disclosure maybe they can try to improve their relationship like they already been friend since childhood so the bond of their friendship should not be shattered like that so easily.
For Kwon, for god sake just stick to your rule on the first place. If Yoon want to stop then so be it and then don't question why. Yoon is finally start to getting to get over his past relationship. And he try to end it for his sake because he doesn't want to be getting hurt for the second time and also for Kwon sake since he will coming back to HQ soon.
All in well, the angst this story have is depicted so well and we will see how the progress of the next chapters. This story is quite interesting and really the way the author embodiment on how each character express their feelings is so good.