The eighteen-year-old day freezes the time of immortality, the old world is full of you and me, the unworldly love, the uncalculated debt, the reluctance to say goodbye, the youthful and reckless boy, the unspeakable longing, only looking forward to one day, the song will ring in the ears, and we will return to the summer of immortality. In the summer when I was 18 years old, my first love came as planned and as a coincidence. After experiencing the ups and downs of first love, I will always feel the pain in my heart. Even if we are old, that boy and that relationship are still sweet. No one knows to whom the final love will fall.