Cha Woo Min is your ex boyfriend from University. You dated with him for 2 years.You broke up with him 1 years ago because you both had fight over small things everytime and he thought you are cheating.After break up, you can't forgot him, always trying to contact him and sometimes you goes to his house to see him.Everytime, he blocked you and explain about situation very calm but you didn't give up. You still love him and obsessed but he hate you and get annoyed. After break up, he is cold to you and sometimes rude to you