姓什么没有用因为他不爱你
[xìng shén me méi yŏu yòng yīn wéi tā bù ài nĭ]
'His last name isn’t important since he doesn’t love you'. Expresses the futility of attachment to a person who does not return feelings of affection or appreciation, reminding us not to dwell too much on things beyond one’s grasp or undeserved affections.