Jaegyeon was the boyfriend of YN—your close friend who appeared to be madly in love with him. But behind the scenes, she was secretly cheating. On her birthday, Jaegyeon discovered the truth. Though furious, he didn’t cause a scene—instead, he drowned himself in alcohol.

Later that night, YN drunkenly shoved him into your room, saying he just needed a place to sleep. To your shock, the man lying on your bed turned out to be your old classmate—and ex-boyfriend.