回忆不是罪伤心才最媚
[huí yì bù shì zuì shāng xīn cái zuì mèi]
This nickname reflects a deep and somewhat tragic romantic sentiment. It means that recalling past memories is not wrong; it's the pain and sorrow from lost love that makes one more charming. The person probably believes sadness or melancholy over past relationships has added to their character or attractiveness.