我的微笑非你莫属你的微笑非我莫属
[wŏ de wēi xiào fēi nĭ mò shŭ nĭ de wēi xiào fēi wŏ mò shŭ]
This translates to 'my smile belongs only to you, but your smile does not belong to me'. It suggests unreciprocated affection - one party is infatuated while the other party may be oblivious or indifferent.