我爱你深入骨髓却挫骨扬灰
[wŏ ài nĭ shēn rù gú suĭ què cuò gú yáng huī]
This nickname expresses deep and unrequited love that has turned to sorrow. 'Loving you deep to the bone, but now I'm grinding my bones to ashes' conveys a feeling of complete devastation and surrender.