我以蓝颜身份爱了你三年
[wŏ yĭ lán yán shēn fèn ài le nĭ sān nián]
This username 'Wǒ yǐ lán yán shēnfèn ài le nǐ sān nián' means 'I have loved you for three years in the role of blue friend (蓝颜: Lán yán)'. The term 'blue friend' typically refers to a close, non-romantic male friend of a female. It indicates that the user has had romantic feelings for a female friend but maintained the boundaries of a good friend for three years.