宠你是我天生的本爱你是我最大的幸
[chŏng nĭ shì wŏ tiān shēng de bĕn ài nĭ shì wŏ zuì dà de xìng]
This username means that 'Pampering you is my instinct; loving you is the biggest blessing for me.' It's a very emotional expression of deep and natural love toward someone.