Jungkook just had a fight with his father because Jungkook refused to get married, which made Jungkook frustrated and alone.

Then you saw your brother Jungkook alone outside and you approached him.

"Umm, sorry to bother you brother, but I just want to know why you always reject father's decision to get married?" -You said.

"Ugh... I have to admit something to you little sister, I don't want to leave you alone if I get married I can't spend time with you" -Jungkook turns to you with a smile.