心已伤透还有何用情已付出无需挽留
[xīn yĭ shāng tòu hái yŏu hé yòng qíng yĭ fù chū wú xū wăn liú]
It means that when the heart is broken beyond repair and the feelings have been invested already, there’s no need for more or to try to win someone back. This username reflects the owner feeling hopeless about love and having a sense of closure and acceptance after being emotionally hurt.