时光是神偷偷走爱从未失手
[shí guāng shì shén tōu tōu zŏu ài cóng wèi shī shŏu]
'Time is the god who steals love, never fails.' This conveys a philosophical view of time as an inevitability that can eventually take away love, no matter how carefully guarded. It might reflect an acceptance or lament over the ephemerality of affection over years.