你要的是她却不是我
[nĭ yào de shì tā què bù shì wŏ]
Translates to 'What you want is her, not me', revealing the loneliness and frustration that the nickname creator felt during a love triangle or similar experience. It seems to come from a sad place where they've felt rejected. This could also symbolically express disappointment from unreciprocated love in wider scenarios such as one-sided friendships etc.