Are there any allusions about the friendship between men and women in ancient times?

Boya is good at playing the piano, while Zhong Ziqi is good at listening. When Boya plays the piano, he thinks of mountains in his mind. Zhong Ziqi said, "Good! Just like the towering Mount Tai stands in front of me! " Thinking of running water in his heart, Zhong Ziqi said, "Well, this piano sound is like a running river, flowing through my heart!" No matter what Boya thinks when playing the piano, Zhong Ziqi can accurately express his thoughts. After Zhong Ziqi's death, Boya thought that there would never be a bosom friend in the world again, so he broke his favorite piano and never played it again.