Kṛṣṇadāsa Kavirāja Gosvāmī, he says that there is difference between material lusty desire and love of God. He has compared that love of God is just like gold, and lusty desire is just like iron. So the difference between lusty desire and love of God is: in the material world, which is going on as love, that is lusty desire. Because the party, both the party, are interested in individual sense gratification. But here, the gopīs, or any devotees, they want to satisfy the senses of Kṛṣṇa. That is the difference between material lusty desire and love of Godhead.
Ātmendriya-prīti-vāñchā tāra nāma kāma (CC Adi 4.165). When one desires one's own sense gratification . . . in the material world, suppose a boy loves a girl and a girl loves a boy. That is personal sense gratification. As soon as the personal sense gratification is not satisfied, immediately the so-called love is divorced. No more love. In the Kali-yuga, it is stated in the śāstra, dāmpatye ratim eva hi (ŚB 12.2.3). In . . . love between husband and wife will be disturbed as soon as there is no satisfaction of sex desires. Dāmpatye ratim eva hi. And in the Western countries we find—in our country also, it has already begun—there are so many divorce cases. Mostly the divorce cases take place when there is disturbance in sex, sex satisfaction. So that is lust.