爱人爱人爱多久才算人新人新人新多久才是旧
[ài rén ài rén ài duō jiŭ cái suàn rén xīn rén xīn rén xīn duō jiŭ cái shì jiù]
The repetition in the name forms the idea that the duration of a relationship could turn someone new into an old partner, suggesting the transient nature of novelty and affection within relationships.