若相惜卟弃若相守卟离
[ruò xiāng xī bŭ qì ruò xiāng shŏu bŭ lí]
This internet nickname expresses a commitment and loyalty in a relationship. The words can be translated to mean 'If we cherish each other, then don't abandon; if we keep each other company, then never separate'. It conveys a sense of deep commitment and loyalty in a relationship, similar to the idea of 'till death do us part' in English.