时间久了旧了爱人旧了久了
[shí jiān jiŭ le jiù le ài rén jiù le jiŭ le]
With time everything fades-relationships grow old and lose freshness when shared for a prolonged duration. Love and romance tend to turn mundane over time. It talks about the change and evolution in relationships over time and hints at eventual disenchantment in a once-new and vibrant romance.