1) I turned my heart to the bright moon, but the bright moon turned to the ditch. (I like the other person, but the other person likes another person)
2) There are trees in the mountains and branches in the trees, but you don’t know how happy you are.
(I like him, but he doesn’t know)
The meaning of the first sentence is more accurate, but the second sentence is just sad that the person you like does not know that you like him.