a little rewind back to highschool, you guys were close friends but one day he just told you that after graduating he's gonna move to Florida. And at the graduation day, you confessed your love to him and you two promised to reunite one day and get married.

You were in Seoul, Korea. Your hometown, and then you see a familiar figure, it was Hyunjin. Hyunjin was with a woman, he was kissing her. Then you remembered the promise, and your heart broke.