菇凉此生你是我的唯一公子此生我爱你永不悔
[gū liáng cĭ shēng nĭ shì wŏ de wéi yī gōng zi cĭ shēng wŏ ài nĭ yŏng bù huĭ]
"Girl, in this life you're my only one; young master, in this life I love you eternally and forever". It's romantic, reflecting the owner's firmness in pursuing true love, or just someone obsessed with love-related things like drama.