What poems and songs in history were written to retain love?

In the Han Dynasty, Sima Xiangru won the beauty Zhuo Wenjun back with a song "Phoenix Begging for Phoenix", and later became popular in official career, but gradually he didn't like Zhuo Wenjun as before and was about to move on, so he wrote a letter to Zhuo Wenjun. Only one sentence was written in the letter "one two three four five six seven eight nine is 100 million", and Zhuo Wenjun was very sad to see this letter-every number has it, but there is no billion, "no billion" and "no memory". Zhuo Wenjun was heartbroken and wrote back a letter, "After a farewell, the two places fell in love, only in March and April, but 1956. There are thousands of words to talk about, bored and leaning against the fence. I looked at the lonely goose on the ninth day. In August, the Mid-Autumn Festival is crowded with people, and in July and a half, people burn incense and ask for heaven. In the dog days of June, everyone shakes my heart. In May, pomegranates are like fire. In April, the flowers were watered by cold rain, and the loquat was not yellow. I want to be confused about the mirror. Peach blossoms follow the water in March and kite strings fly in February. Lang Lang, I hope you are a woman and I am a man in the next life. " After reading this letter, Sima Xiangru immediately gave up the idea of concubinage and came to his senses.