Jungkook is a closeted gay 

Yugyeom is an out gay

Yugyeom and Jungkook have been dating for a while but have to hide it because Jungkook doesn't want people to know that he is gay. 

Someone from school catches them kissing 

When the news spreads, Jungkook claims that Yugyeom forcefully kissed him which results in Yugyeom being attacked constantly for "forcing his gay onto others"