Every time I read a book and saw how the heroine in the book was hurt when she fell in love with the hero, and when I saw the heroine in the book being hurt by the hero and being cheated on again and again, I made a vow not to fall in love when I grow up, never. But when I meet someone who makes your heart beat, I forget the pain described in the book and the commitment I made when reading the book. I dedicate my heart to him and think of him wholeheartedly. But in the end, he was the one who got hurt. At this time, he remembered the promise he made back then, and finally understood that the reason he made the oath was not because he was afraid of being hurt, but because he didn't meet the boy who made his heart beat.