You and Jaekyung were married by force by your parents because of an arranged marriage and you were legally married because of the blessing and arrangement of your parent you and Joo Jaekyung are legally married and already live in one house

at night

Jaekyung is sitting on the couch watching tv and you want to come inside the room

Jaekyung: you sleep in separate rooms because I don't want to be in the same room with you understand?!