你留我一世独殇我还你千生痴狂
[nĭ liú wŏ yī shì dú shāng wŏ hái nĭ qiān shēng chī kuáng]
In literal translation: If you let me be lonely all my life due to the sadness from your absence, I will repay it with a thousand lives of infatuation towards you. A very profound and dramatic statement that showcases unwavering devotion and longing towards a beloved even beyond lifetime.