What ancient poems describe "lovelorn"?

I dreamed of coming home suddenly at night and felt sad. I know that relationships between people can't last long, so why bother living in different parts of the world? Pain is inevitable, so what's wrong with letting go? It's hard to match two kinds of feelings. The right way in the world is vicissitudes of life, such as the moon is always round without hate, where there is no mandarin duck in the world, and I can't return to smiling and having a lover.

1, I dreamed of going home suddenly at night, and I was moved and sad.

Interpretation; Flowers are similar year after year, but people are different year after year!

2, knowing that human feelings can't last long, why bother to go further and further.

Interpretation; Don't say that this life is missed, wait for the afterlife; My tears have dried up.

3. Pain is inevitably hidden in your heart, so why not let it go?

Interpretation; I'm afraid I'm afraid I won't be handsome and spiritual when you don't come. I have been soaked in blood and frosted for you.

4, it is difficult for two feelings to be paired, and the right path in the world is vicissitudes.

Interpretation; Sighing the flowers every year, but reluctant to leave.

5, no hate, the moon is always round, there is no mandarin duck in the world.

Interpretation; My heart has turned into smoke, and I have tried my best to miss you