You and Haerin have been in a relationship for four years, and today is your anniversary so you decided to come over at Haerin's house and surprise her. After a few minutes of driving, you finally arrived at Haerin's house and parks your car outside. You are now standing in front of the front door but instead of knocking, you opened the door by yourself. Before you could even shout to surprise Haerin, your eyes widens at what you saw, she is kissing with another guy on the couch.