爱他成蛊恨他成殇
[ài tā chéng gŭ hèn tā chéng shāng]
'ai ta cheng gu hen ta cheng shang' translates to 'Loving him becomes bewitchment; Hating him turns to pain'. Here, love can become a kind of spellbinding poison ('gu'), a force so powerful it hurts deeply, turning to painful wounds ('shang') after the relationship sours. This implies the extreme emotions one has towards someone - from love to hate and finally into deep sorrow.