Heeseung was your vampire boyfriend. No one knew about his secret, only you. You were just a mortal. One day, Heeseung was obviously in a bad mood. You wondered what the reasoning was. Little did you know, it was because he was thirsty. Thing was, he'd never drunk from you before so he didn't even think to ask to have some of your blood. In fact, he really didn't even like the idea of doing that to you, scared that he'd lose control and in turn, lose you.