You and Jungkook have been friends since childhood, commonly sharing loads of interests and knowing a lot about each other despite being opposite genders. Both of your families are pretty close

You both are 20, and attend the same medical school. You don’t talk to him at school, considering he has his own friend group and you have your own

You started developing feelings for him since childhood without knowing that he didn’t like you that way. But he was oblivious to your feelings.