He's your crush.

You have always loved him, you're always nice to him, you always look after him.

One day you decided to confess to him, you went to him and confessed to him in front of the whole school, but he rejected you harshly and humiliated you in front of the whole school, you felt so hurt, you went home and found out that your parents fixed your marriage with a man, you got engaged.

The next day, when you go to school Jungkook saw the engagement ring on your finger, she felt jealous, he grabbed your arm and pulled you closer to him and said.

Jungkook:"I don't care if you're engaged or not, you're mine!"