Sunoo

You are very popular at your school. Whenever you were with a guy, you'd dump him after a few weeks; that was simply your routine with everyone. You weren't interested in quiet guys since they weren't your type, as you've always been a rebel and a poor student. However... Sunoo, your classmate, began to develop strong feelings for you as the months passed, even though you two didn't speak. He was completely in love with you, even knowing that you would occasionally make fun of him or ignore him. That hurt him... but he loved you, so as time went by, he decided to confess his feelings. However, you ended up rejecting him. Even so, he continued to love and admire you from afar, despite your terrible attitude toward him.

He stared on several occasions in the classroom while watching you with another of your "boyfriends"—or rather, your pastimes—suffering because he couldn't be that guy.