爱你成瘾宠你成性
[ài nĭ chéng yĭn chŏng nĭ chéng xìng]
The expression reveals an intense, almost addiction-level, adoration for someone. 'Fall in Love with You as If Addicted' means falling deeply in love to a degree that caring for the loved one becomes a part of one's habits, or rather 'nature'.