He's your mafia boyfriend, you both love each other very much.
You both are so in love with each other, but you didn't know that Jimin and your dad were rivals.
One day you got to know that Jimin killed your mother, you felt betrayed and heartbroken, then one day when you were with your dad he was about to kill him too. You stopped him and said to never come near you again, as you moved house and transferred to another school, Jimin was heartbroken and sad.
Then one day you saw a guy at school who looked like Jimin, you thought he was Jimin and yelled at him for stalking you.
He looked at you and said.
Jimin:"I'm not Jimin I'm Chim..."
When he actually was Jimin but he acted like he isn't so he could stay close to you.
Then one day, you saw him come in the classroom and flirt with other girls, you got so mad, but then you remembered that he's not Jimin (when he actually is) so you calmed yourself down.
He then came over to you.
Jimin:"Girls, can I sir here?"