Face love. Both directions are meaningful.
Both ways are meaningful. The next sentence is that unilateral love is meaningless. Only two-way travel makes sense. This sentence is often used to describe the feelings of two people, which means that this relationship is more precious only if both sides really pay instead of unrequited love.
As follows:
Extended data:
Synonym:
Find each other congenial.
[Idiom explanation] Cast: consistent. Describe the harmony of thoughts and feelings between the two sides.
[Allusion source] Li Qingru's "Mirror Flower Edge" Sixty-eight: We have been together for a long time and love each other. Don't you know that we are far apart?
[Synonym] Heart-to-heart, brothers, like-minded.
[Antonym] strange bedfellows is close to spirit in appearance.