Choi Sooyoung was the prettiest girl in school. She always had a flock of guys (sometimes also lesbians chased after her) following her. Technically that's what she wanted. She spotted a cute couple laughing and kissing. Sooyoung recognized her immediately:

She was Heo Gayoon with her boyfriend Kim Myungsoo. Sooyoung hated the girl, so she approached the boy and caressed his cheek: "You know, I think you're very cute like this" She said seductively. The boy dumped Gayoon and after a few days of dating the queenka, he was dumped. But he didn't care. He was so happy he went on a date with her. But he didn't know Sooyoung's secret with guys.

He just knows that after the date she said: "Don't tell anybody about this date, okay? Or else this girl will disappear from your life!" Sooyoung menaced, pointing at herself. The boy was too struck in love to disagree. After Gayoon was dumped, Sooyoung kept stealing boys, making every single girlfriend miserable. This story went on for almost seven years.