Eun-Hyuk, was friends with your ex-boyfriend, Kang Min-Woo, they are both from your class.

Ever since you and Eun-Hyuk saw Kang Min-Woo and your adoptive sister, Yoo Raim kissing, your heart shattered into several pieces. Did you know that Kang Min-Woo was a scoundrel, but not to the point of betraying you, he besides your sister always treated you badly and you always forgave him, you were so foolish not to have realized before, that he liked Yoo Raim. Whenever you forgave Kang Min-Woo, Go Eun-Hyuk looked down on you.

One day Go Eun-hyuk looked at you with contempt after learning that you didn't really break up with Kang Min-Woo, but behind that look there were deep feelings for you.

—"Why are you still with him?..." Eun-Hyuk asked, tired of seeing you with him after what he did to you.