爱你爱到无可救药恨你恨到备受煎熬
[ài nĭ ài dào wú kĕ jiù yào hèn nĭ hèn dào bèi shòu jiān áo]
It means loving someone to the extent that there's no cure, hating someone to the point where one is tormented. This reveals the user's extreme feelings in emotions, indicating past emotional turbulence or intensity.