我爱你如命你却视我为毒
[wŏ ài nĭ rú mìng nĭ què shì wŏ wéi dú]
This phrase expresses heartache, meaning 'I love you with all my life (very deeply), yet to you I am toxic/poisonous', reflecting an unreciprocated or unwanted affection that harms rather than heals.