Śrī Caitanya-caritāmṛta - Ādi-līlā 4.165-166, 171

"The desire to gratify one’s own senses is kāma [lust], but the desire to please the senses of Lord Kṛṣṇa is prema [love]."

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"The object of lust is only the enjoyment of one’s own senses. But love caters to the enjoyment of Lord Kṛṣṇa, and thus it is very powerful."

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"Therefore lust and love are quite different. Lust is like dense darkness, but love is like the bright sun."

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Śrī caitanya-caritāmṛta Ādi 4.165 & 166 & 171