祝你孤独一生且长命百岁
[zhù nĭ gū dú yī shēng qiĕ zhăng mìng băi suì]
Literal translation is 'Wish You A Long Lonely Life'. On the surface, it may sound like a curse. However, it could also reflect a complex sentiment where the speaker accepts they cannot be together while expressing a twisted wish for longevity, albeit alone.