Jin is your best friend, and also a really sweet guy. But you realized, that he changed. He turned from a sweet guy, to a very obsessed best friend. He is really obsessed with you and very flirty to others including you.

You were outside reading a book and heard screams. you thought something happened but no. You saw a bunch of girls screaming because of Jin. Jin was there, flirting with other girls but then saw you and winked playfully at you.