Also everyone is so mad at Kyujin, but he's not completely at fault. Doyeol basically started their relationship and he went along with it even tho he wasn't' in love'. Then Jimin was his first crush and he didn't know how to handle that. Also both of them knew about the intention of the other and still let it happen without giving too much hardship to Kyujin. He's a lil pushover so he doesn't want people mad, but at the same time he also has feelings. Not saying I would make the same choices he has, but looking from his point of view it wasn't easy. (Still a bit sad he didn't end up with Doyeol, but I understand. He loves them equally much but in different ways, oh boi)
Honestly I'm always against people running away from their responsibilities. But this time the MC made the best decision. First time I'm so torn between 2 love interest. My preference was Doyeol, fuck I loved that bastard, I almost cried when he found out Kyujin was having sex with Jimin. Hearing your biggest love betray you like that wow I would loose my mind. Shit I'm still hurting for him omg. I hated that he married the woman, but I understand why he did it. Shit what a heavy story, didn't expect this after temptress/tempters