jungkook and jimin have their own background problems, being in the old college they are in, they end up in the same elevator. but that's only how they meet.
jungkook being a playboy and sleeping with almost every girl on campus, says he's straight. (even though he feels nothing towards them)
jimin is always staying in his room, locked up, studying. most of the times, he even skips meals (smh). really, he only goes out if its absolutely neccesary.
jimin has very low self esteem and jungkook wants to help. even if he has his own problems that he doesn't like talking about to other people.