你不爱我不如坠入深渊
[nĭ bù ài wŏ bù rú zhuì rù shēn yuān]
'Ni bu ai wo bu ru zhui ru shen yuan' (If You Don't Love Me, Might As Well Plunge Into Abyss) expresses such sorrow that without the other's love, one may feel like giving up entirely on happiness, suggesting an inclination towards dark thoughts.