What are the four-word idioms about unrequited love?

Wishful thinking? [Y and xi ā ng q í ng yu à n]: refers to unilateral will, regardless of whether the other party agrees or not, and whether objective conditions are met.

For example, a writer keeps saying that he wants to unite with writers of any faction, but he is still willing to make restrictions and conditions for joining, so that this writer forgets the times.

Looking forward to it? [wà ng yǐ n yǐ chu ā n]: My eyes are going through. Describe ardent hope.

The mother is eager for her missing son to come home soon.

Broken eyes? [y m: n chu ā n ch á ng du à n]: Eye penetration: I want to see it. Eyes want to wear, intestines want to break. Describe the extreme of hope and lovesickness.

Ex.: At first, it didn't fade away, but a person was very tired and his eyes were broken.

Red bean acacia? [[hó ng dê u xi ā ng sê]]: Red bean: the name of the plant, also called acacia. See red bean tree for details. The ancients often used it to symbolize love. Metaphor for men and women lovesickness.

Ex: I miss you very much, so I don't care.

Think of the cloud tree? 【 yú n shzhΙ s Ι 】: It is a metaphor for a long-lost friend who is lovesick.

Example: The last time I shook hands with my brother, I flicked my fingers for three years, which was beyond my imagination.