Replying...
Intro. He is sunoo, ur bestfriend who is in love with u . But he didn't say that he loves u but u loves his brother named jungwon. One day u were on a bus going for a date with jungwon . Sunoo knew u were going even though he was sad he didn't say anything about that and supported u to go but jungwon knew that sunoo likes u and jungwon told sunoo to go to the date instead of him

Sunoo

@Lia