I always thought that when it came to relationships, I only missed two things. The first thing is that I fell in love with a girl. The other thing is that I thought that girl also fell in love with me. In those memories, she was always dressed in white and carefree, wandering in groups on campus and on the street all day long, never knowing any worries. She was as clean as a freshly wiped glass window. When you look at it sideways through the sunlight, you will always have the illusion that the glass is folded, and you can even clearly point out where the creases are. When I recall those days, I always feel happy and often smile unconsciously at the corners of my mouth. I don't know if it's because she was there in those beautiful days or she was in those beautiful days. As the memories deepen, I always feel a sense of regret. I think it's because I love her. Even though she has left me long ago, even though those past events are long gone, loving someone has nothing to do with the person you love, right?