原谅我不能久居你心
[yuán liàng wŏ bù néng jiŭ jū nĭ xīn]
This nickname suggests a feeling of sadness and resignation in love. It implies that the user acknowledges that they cannot stay in someone's heart forever, or they might have been asked to leave by their loved one. The phrase carries a melancholic tone and expresses an understanding of impermanence in relationships.