可惜没一哭就让你心痛的命
[kĕ xī méi yī kū jiù ràng nĭ xīn tòng de mìng]
Translated as a form of self-deprecation - "It's a pity that I don't have the ability to make you heartbroken just by crying" - it carries the nuance of feeling undervalued, misunderstood, or ineffective in one's expression of emotions or impact on someone significant to the user.