Jungkook and y/n are best friends since they were young.They are really close friend who know each other's secret. Jungkook has a big crush on y/n but he doesn't tell her becuz he doesn't want to break the friend ship. When they are in the university, taehyung want to bully y/n but jungkook always protect her.But y/n like taehyung.Taehyung is a playboy so he date her and become her boy friend. Jungkook know everything about taehyung and tell y/n but she doesn't believe him. Will y/n know that jungkook has a crush on her? What will happen to Taehyung? Who will y/n choose? Find out My best friend and my boy friend