傻瓜狠愛妳笨蛋狠想你
[shă guā hĕn ài năi bèn dàn hĕn xiăng nĭ]
This username combines affectionate terms used in romantic relationships. It means 'Dumb but deeply in love with you, Idiot but missing you deeply.' It reflects strong feelings mixed with a bit of playfulness and self-deprecation.