CC Adi-lila 04.163 - BRS 1.2.285
Sri Caitanya-caritamrta
CC Adi-lila
CC Adi 4.163, Translation and Purport:
"The pure love of the gopīs has become celebrated by the name "lust." The dear devotees of the Lord, headed by Śrī Uddhava, desire to taste that love."
This is a verse from the Bhakti-rasāmṛta-sindhu (1.2.285).