我哭不出来哭了你也回不来
[wŏ kū bù chū lái kū le nĭ yĕ huí bù lái]
Expresses a deep sorrow where one can no longer cry even when faced with great sadness, emphasizing the irreversible loss or end in a relationship; tears are no more capable of bringing back lost things or people, highlighting a sense of helplessness after a breakup or departure.