Think back to last spring, there was a gentleman by the river. What does the full text mean?

I remember seeing you for the first time by the river last spring. When I came back today, I didn't see my bosom friend, but I saw the loess in front of the grave. My heart ached and my sadness kept repeating, and I couldn't help crying. The pain when I left was as much as the joy when I came, and the clouds in the sky by the river were like my sadness. This is a good example that can be used to describe a person's behavior.

Source: Ming Dynasty Feng Menglong's "Warning Records"

Extended data:

This is a story about Boya and the little chef of hippo.

Yu Boya and Zhong Ziqi are good friends who have been around for a long time. Boya is good at playing, while Zhong Ziqi is good at appreciating. This is the origin of the word "confidant". After Zhong Ziqi's death, Boya was deeply saddened, thinking that there was no confidant in the world, and no one in the world could understand the artistic conception of his performance like Zhong Ziqi. So I broke my favorite piano and never played it again.

(Note: After textual research, it was originally named Bo. Because Zhong Ziqi met Boya, later generations linked this encounter with Boya and called it Yu Boya. It is a novel by Feng Menglong, a novelist in the late Ming Dynasty, to say that his surname is Yu Mingrui and his word is Boya. )

References:

Baidu encyclopedia-Boyazi period