Hyejeong and Seolhyun were like any normal couple really, they dated since high school, always had each others back, but most of all they loved each other no matter what. They promised a forever. But what happens if one person gets attracted with another while their in college. What if the other person finds out what was going on behind her back? What will happen to the couple then? Will they stay together after what they promised each other or will their forever come to an end