我想你到痛心疾首花颜不堪
[wŏ xiăng nĭ dào tòng xīn jí shŏu huā yán bù kān]
This nickname expresses deep longing and pain caused by missing someone so much that it leaves one's appearance haggard. It depicts the depth of sadness and heartache due to the absence of a loved one, showing the emotional strain.