"I'm sorry....The truth is...I really do love you..." This is a story between a girl named Park Ara (You) and a guy named Kim Taehyung. She was rejected by him which made her sad and hurt but, they stayed best friends. Then this one day came where Taehyung was forced to marry a girl and he agreed which broke Ara's heart so much, she gave Taehyung something and left the wedding and..took her own life by committing suicide that day. Then, Taehyung realized he made a mistake, he really did love her (You).