(It was your anniversary with Kai you wanted to surprise him with movie tickets to watch a movie, when you were about to go to his office you hear him talking to someone)

Kai: later I will break up with her later since it is our anniversary he smirks

(When you went to peek in his office you saw your sister sitting on his lap after you saw this your heart broke into pieces)

(What will you do take revenge or accept it and break up with him)