CC Madhya 8.194
anudina bāḍhala, avadhi nā gela
duṅhu-mana manobhava peṣala jāni’
kānu-ṭhāme kahabi vichurala jāni’
duṅhukeri milane madhya ta pāṅca-bāṇa
su-purukha-premaki aichana rīti
These verses were originally composed and sung by Rāmānanda Rāya himself. Śrīla Bhaktivinoda Ṭhākura suggests that during the time of conjugal enjoyment, the attachment might be compared to Cupid himself. However, during the period of separation, Cupid becomes a messenger of highly elevated love. This is called prema-vilāsa-vivarta. When there is separation, conjugal enjoyment itself acts like a messenger, and that messenger was addressed by Śrīmatī Rādhārāṇī as a friend. The essence of this transaction is that transcendental loving affairs are as relishable during separation as during conjugal enjoyment. When Śrīmatī Rādhārāṇī was fully absorbed in love of Kṛṣṇa, She mistook a black tamāla tree for Kṛṣṇa and embraced it. Such a mistake is called prema-vilāsa-vivarta.