Yongguk and Zelo have been dating for a while bit the only person (other than them) who knows is Yongguk's best friend Himchan. Zelo is the "popular" kid in school and doesn't want his reputation tarnished by him dating Yongguk. 

People find out and them dating and instead of admitting that they are dating, Zelo lies about Yongguk constantly trying to have with him and him constantly refusing.

People start harassing Yongguk. Call him names, write on his locker, beat him up, mess up his things. No matter what, Zelo won't fess up and admit that they are dating. 

Zelo then tries to keep dating Yongguk but Yongguk is confused whether or not he should continue to date him