Jungkook is your academic rival.

You guys are actually cousins, but ever since your parents have put you in the same school, you guys have been competing like hell to try and get the better grades.

One day, Jungkook starts spreading rumours about you, saying that you slept around and babysat the teacher's daughter to get good grades.

The rumours spread like fire in a forest.

You both end up at a family gathering. You glare at him, but he acts all sweet to you.