她曾是你攻心的痛他曾是你致命的伤
[tā céng shì nĭ gōng xīn de tòng tā céng shì nĭ zhì mìng de shāng]
These words express pain and deep scars left by love. 'She once was the pain that struck at your heart; he was the wound that was fatal for you.' It speaks about individuals who once deeply hurt each other in past relationships.