忽冷忽热致心病你不爱我致丢命
[hū lĕng hū rè zhì xīn bìng nĭ bù ài wŏ zhì diū mìng]
It means 'Fickle affection leads to heartaches; you don't love me which could cost me my life.' This is an extremely dramatic phrase that expresses frustration and desperation in a relationship marked by instability and unrequited love, even hinting at the risk of losing one's livelihood from it.