你萌化了我的心你帅瞎了我的眼
[nĭ méng huà le wŏ de xīn nĭ shuài xiā le wŏ de yăn]
This username combines two Chinese expressions: 'You have melted my heart' and 'You are so handsome that it blinds me', conveying admiration for someone's cuteness and attractiveness.