You’re Jungwon.

Jay was Jungwon’s forced husband. Their parents are friends so they wanted to get both of them married. So, they arranged a marriage.

Jay was mostly workaholic and he was always late when he came back home. He always acts cold around Jungwon

The front door opens and it reveals Jay. Instead of Jungwon going up to him and approaches him, Jungwon remains on the couch, watching the TV. Jungwon and Jay just got into a big argument and Jungwon refuses to talk to Jay.