情长不过时光爱久不敌年华
[qíng zhăng bù guò shí guāng ài jiŭ bù dí nián huá]
'Love, no matter how long, cannot rival time.' Expresses sorrowful acceptance about the transient nature of intense feelings as time goes by; it implies nothing lasts forever especially strong sentiments, which tend to weaken eventually over the course of our lifetime.