
I said in this way, because it was what he was thinking at the time. He didnt know Shihoon was Maris brother. He thought Shihoon and Mari were having an affair. He thought Shihoon was the guy Mari was in love. And yet, he dit it anyway. Mari may be a bitch, but he was an asshole and a terrible friend.

uh literally the whole first 40 chapters was him trying to not like shihoon because he thought that he was maris boyfriend? meaning he did care about her. but then he fell in love and he still felt horrible about it, but mari doesn’t understand that. she just thinks he tried to steal her ‘oppa’ (boyfriend) away. the only reason why he’s all happy and with him now is because he knows he’s single and it was a misunderstanding. now mari just needs understand the whole story lmao

They're stating that trying not to fall in love with someone your friend is in love with (or so you think) is a cute gesture, but is not any less of a betrayal considering you slept with the person. Being guilty about it doesn't make it right. Bye now kids, try not to fight too much over these fictional characters. ( ̄∇ ̄")
I dont know why so many people are criticizing Mari. Junyoung tried to steal her boyfriend (at that time, he thought Shihoon was, he didnt know Shihoon was Mari`s brother). I wouldnt forgive him either. Yes, she is boring af (I hate her) and is acting like a spoiled child, but she has a reason for it. "Ah but she was dating a married guy." Two wrongs dont make a right. Junyoung should have been loyal to her, but he didnt care about their friendship. Can you imagine how it would be like if it were with you? Wishing the couple to stay together doesnt make me think his initial attitude was right. Junyoung is cute, hot and Im hoping for his happiness, but... NOPE... I wouldnt want a friend like him.