…when Radharani left the area of the rasa dance out of anger at not receiving special treatment, Krsna became very sorrowful to see Her absent. The perfection of the rasa dance was considered to be complete due to Radharani's presence, and in Her absence Krsna considered the dance to be disrupted. Therefore He left the arena to search Her out. When He could not find Radharani after wandering in several places, He became very distressed. Thus it is understood that Krsna could not enjoy His pleasure potency even in the midst of all the gopis. But in the presence of Radharani He was satisfied.

(From TLC 30: The Transcendental Pastimes of Radha and Krsna)