在乎久了会疲惫主动久了会很累
[zài hū jiŭ le huì pí bèi zhŭ dòng jiŭ le huì hĕn lĕi]
'After caring for too long, one gets tired; after taking the initiative for too long, one becomes exhausted.' This reflects emotional fatigue due to prolonged concern or proactive behavior towards relationships or goals in life.