The spontaneous attraction of Sri Krsna for His dearest parts and parcels generates an enthusiasm that obliges Sri Krsna and the gopis to meet together. To celebrate this transcendental enthusiasm, there is need of a sentiment of separation between the lover and beloved. In the condition of material tribulation, no one wants the pangs of separation. But in the transcendental form, the very same separation, being absolute in its nature, strengthens the ties of love and enhances the desire of the lover and beloved to meet. The period of separation, evaluated transcendentally, is more relishable than the actual meeting, which lacks the feelings of increasing anticipation because the lover and beloved are both present.

From Srila Prabhupada’s purport to Cc Adi 4.31