Some concerns can't be seen. Maybe they are low self-esteem, maybe they are shy, or they are not brave enough, so they must be hidden in the corner. Even two-way secret care can't be put on the table. There is a tacit understanding, but often when the feelings come to an end, there is only this tacit understanding... After graduation that summer, I have imagined countless times to see her again after many years. Do I have the courage to reach out and pat her on the shoulder, stop her forward steps and say "long time no see", I really want to see you again. Even if I'm not brave enough, it doesn't matter, I can stand away... But after I saw her, I found that I want to see her, not really want to see her, but me in the past, Want to see her before, that's all!