毕竟你爱的人不是我
[bì jìng nĭ ài de rén bù shì wŏ]
This means 'After all, the one you love isn’t me', indicating sadness and acceptance because one knows clearly the affection is one-sided. There is a tone of heartache, resignation, and possibly longing contained within it. Such net names typically used on social media to describe feelings related with lost loves