Hard to hate you

after receiving a terrible broken feeling, taehyung isn't ready to accept any other man in his heart..
on the other hand, jeon jungkook find a detachable feeling after saw taehyung at a party. he is detarmind to make taehyung his.
though taehyung accept jungkook in one point to make his heart warm again, but jungkook will leave taehyung again .

why'll jungkook leave taehyung?
what'll happend that tear them apart from a lovely relation?