He was narcissistic, loved the attention around. He is self-confident, ran his own business and went to university. He has a rather bad reputation, he smokes and drinks alcohol. But at the same time, he can be gentle, kind and considerate. And he is possessive and terribly jealous.
(Jungkook is your new friend's older brother and you first met him at their house when you were doing a joint project with his younger brother. Jungkook went to university and was already running his own business. He was interested in you and liked to tease you)