深爱太久也会疲惫
[shēn ài tài jiŭ yĕ huì pí bèi]
Even when you've loved too deeply for a prolonged period, there comes a point where fatigue sets in. This expresses the weariness that can accompany profound yet lasting emotions. Prolonged commitment may lead not only to joy but also to tiredness, recognizing that even love needs nurturing and rest.