你是我的无药可救我是你的命中注定
[nĭ shì wŏ de wú yào kĕ jiù wŏ shì nĭ de mìng zhōng zhù dìng]
In this context, 'no cure' may mean hopelessly devoted while 'destiny' indicates the inevitability or destiny-driven aspects in their mutual bond. It speaks to an irreplaceable impact made upon each other.