Can you recommend a sentimental love story?

The story was about a pair of young people who had just graduated from university. They were in the same unit. The boy had a crush on the girl, but he did not have the courage to say it. In the end, the boy left. It was only after a long time that he found out that the girl had never married.
Thank you, but it's not the kind that I wrote myself... She read it in a magazine and felt sad, just like Shen Shijun and Gu Manzhen, who had been together for half their lives.
It seems that the girl said that she would introduce a girl to the boy, but when they arrived at the park, only this girl introduced a girl, but she did not come. In fact, she had already hinted to the boy, but he did not understand it, so he was very sad.

Answer 1

" Red Dust Tears: The Dream of the Ming Palace " was an ancient romance novel written by the author, Xin Shi·Meng. The general plot of this novel was:

The fate of the mortal world, quiet cold resentment. A lifetime of infatuation, passing through a hundred years, dreaming for a thousand years. How many things, as if in a dream, but also in a dream still talk about dreams. Now, he could not tell if he was dreaming or awake…
The world of mortals on the other side of the world was as quiet as smoke.
The old matters of the mortal world drifted away in his dreams.
The feelings of the past life and the dreams of the next life turned into fate in this life. A twisted and moving story played out in the cycle of time, demonstrating the sad beauty and beautiful sadness.
We don't belong to this era. Since we can't leave, we can only end it as soon as possible…