What does it feel like to love someone unrequitedly? Bitter? Sweet? Have no idea. For him, I have cried and laughed. If she had not confessed her love, if we never met again, would he have remembered that she had appeared in his life? Does he know that he cried and laughed inexplicably before, and everything was because of him? And on a sunny day, will she suddenly think of that unrequited love that once belonged to her?