"Alas, before We met there was an initial attachment between Us brought about by an exchange of glances. In this way attachment evolved. That attachment has gradually grown, and there is no limit to it. Now that attachment has become a natural sequence between Ourselves. It is not that it is due to Kṛṣṇa, the enjoyer, nor is it due to Me, for I am the enjoyed. It is not like that. This attachment was made possible by mutual meeting. This mutual exchange of attraction is known as manobhava, or Cupid. Kṛṣṇa"s mind and My mind have merged together. Now, during this time of separation, it is very difficult to explain these loving affairs. My dear friend, though Kṛṣṇa might have forgotten all these things, you can understand and bring this message to Him. But during Our first meeting there was no messenger between Us, nor did I request anyone to see Him. Indeed, Cupid's five arrows were Our via media. Now, during this separation, that attraction has increased to another ecstatic state. My dear friend, please act as a messenger on My behalf, because if one is in love with a beautiful person, this is the consequence.’
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.
(Sri Caitanya Caritamrta----2:8:194----translation and purport).

"O my Lord, You live in the forest of Govardhana Hill, and, like the king of elephants, You are expert in the art of conjugal love. O master of the universe, Your heart and Śrīmatī Rādhārāṇī"s heart are just like shellac and are now melted in Your spiritual perspiration. Therefore one can no longer distinguish between You and Śrīmatī Rādhārāṇī. Now You have mixed Your newly invoked affection, which is like vermilion, with Your melted hearts, and for the benefit of the whole world You have painted both Your hearts red within this great palace of the universe.’”
(Sri Caitanya Caritamrta----2:8:195----translation).

“The pastimes of Rādhā and Kṛṣṇa are very confidential. They cannot be understood through the mellows of servitude, fraternity or parental affection.
(Sri Caitanya Caritamrta----2:8:201----translation).

Without the gopīs, these pastimes between Rādhā and Kṛṣṇa cannot be nourished. Only by their cooperation are such pastimes broadcast. It is their business to taste the mellows.
Without the help of the gopīs, one cannot enter into these pastimes. Only one who worships the Lord in the ecstasy of the gopīs, following in their footsteps, can engage in the service of Śrī Śrī Rādhā-Kṛṣṇa in the bushes of Vṛndāvana. Only then can one understand the conjugal love betweenRādhā and Kṛṣṇa. There is no other procedure for understanding.
(Sri Caitanya Caritamrta----2:8:203-205----translation).

In the conjugal pastimes of Kṛṣṇa, Kṛṣṇa is the hero (nāyaka), and Rādhikā is the heroine (nāyikā). The first business of the gopīs is to chant the glories of both the hero and the heroine. Their second business is to gradually create a situation in which the hero may be attracted to the heroine and vice versa. Their third business is to induce both of Them to approach each other. Their fourth business is to surrender unto Kṛṣṇa, the fifth is to create a jovial atmosphere, the sixth to give Them assurance to enjoy Their pastimes, the seventh to dress and decorate both hero and heroine, the eighth to show expertise in expressing Their desires, the ninth to conceal the faults of the heroine, the tenth to cheat their respective husbands and relatives, the eleventh to educate, the twelfth to enable the hero and heroine to meet at the proper time, the thirteenth to fan the hero and heroine, the fourteenth to sometimes reproach the hero and heroine, the fifteenth to set conversations in motion, and the sixteenth to protect the heroine by various means.
(Sri Caitanya Caritamrta----2:8:204-205----purport).

Some materialistic sahajiyās who cannot actually understand the pastimes of Rādhā and Kṛṣṇa manufacture their own life-styles without referring to authority. Such sahajiyās are called sakhī-bhekī, and sometimes they are called gaura-nāgarī. They believe that the material body, which is fit to be eaten by jackals and dogs, is enjoyable for Kṛṣṇa. Consequently they artificially decorate the material body to attract Kṛṣṇa, thinking themselves sakhīs. But Kṛṣṇa is never attracted by the artificial grooming of the material body. As far as Śrīmatī Rādhārāṇī and Her gopīs are concerned, their bodies, homes, dresses, ornaments, endeavors and activities are all spiritual. All of these are meant to satisfy the spiritual senses of Kṛṣṇa. Indeed, they are so pleasing and endearing to Kṛṣṇa that He is subjugated by the influence of Śrīmatī Rādhārāṇī and Her friends. They have nothing to do with anything mundane within the fourteen planetary systems of the universe. Although Kṛṣṇa is attractive to everyone, He is nonetheless attracted by the gopīs and Śrīmatī Rādhārāṇī.
(Sri Caitanya Caritamrta----2:8:204-205----purport).

"The pastimes of Śrī Rādhā and Kṛṣṇa are self-effulgent. They are happiness personified, unlimited and all-powerful. Even so, the spiritual humors of such pastimes are never complete without the gopīs, the Lord"s personal friends. The Supreme Personality of Godhead is never complete without His spiritual potencies; therefore unless one takes shelter of the gopīs, one cannot enter into the company of Rādhā and Kṛṣṇa. Who can be interested in Their spiritual pastimes without taking their shelter?’
(Sri Caitanya Caritamrta----2:8:206----translation).

The happiness of the gopīs increases ten million times when they serve to engage Śrī Śrī Rādhā and Kṛṣṇa in Their transcendental pastimes.
By nature, Śrīmatī Rādhārāṇī is just like a creeper of love of Godhead, and the gopīs are the twigs, flowers and leaves of that creeper.
(Sri Caitanya Caritamrta----2:8:208-209----translation).

When the nectar of Kṛṣṇa's pastimes is sprinkled on that creeper, the happiness derived by the twigs, flowers and leaves is ten million times greater than that derived by the creeper itself.
In his Amṛta-pravāha-bhāṣya, Śrīla Bhaktivinoda Ṭhākura states, “Śrīmatī Rādhārāṇī is the creeper of love of Godhead, and the gopīs are exactly like twigs, flowers and leaves. When water is sprinkled on the creeper, the twigs, flowers and leaves indirectly receive all the benefits of the creeper itself. But water sprinkled directly on the twigs, leaves and flowers is not as effective as water sprinkled on the creeper's root. The gopīs are not as pleased when they directly mix with Kṛṣṇa as when they serve to unite Śrīmatī Rādhārāṇī with Kṛṣṇa. Their transcendental pleasure lies in uniting Them.”
(Sri Caitanya Caritamrta----2:8:210----translation and purport).

"All the gopīs, the personal friends of Śrīmatī Rādhārāṇī, are equal to Her. Kṛṣṇa is pleasing to the inhabitants of Vrajabhūmi, just as the moon is pleasing to the lotus flower. His pleasure-giving potency is known as āhlādinī, of which the active principle is Śrīmatī Rādhārāṇī. She is compared to a creeper with newly grown flowers and leaves. When the nectar of Kṛṣṇa"s pastimes is sprinkled on Śrīmatī Rādhārāṇī, all Her friends, the gopīs, immediately appreciate the pleasure a hundred times more than if they were sprinkled themselves. Actually this is not at all wonderful.’
Although the gopīs, Śrīmatī Rādhārāṇī’s friends, do not desire to enjoy themselves directly with Kṛṣṇa, Śrīmatī Rādhārāṇī makes a great endeavor to induce Kṛṣṇa to enjoy Himself with the gopīs.
Presenting various pleas for the gopīs, Śrīmatī Rādhārāṇī sometimes sends the gopīs to Kṛṣṇa just to enable them to associate with Him directly. At such times, She enjoys a happiness ten million times greater than that enjoyed through direct association.
(Sri Caitanya Caritamrta----2:8:211-213----translation).

Śrīmatī Rādhārāṇī and the gopīs are not interested in their personal happiness derived from association with Kṛṣṇa. Rather, they become happy by seeing one another associate with Kṛṣṇa. In this way their dealings are further nourished by love of Godhead, and seeing this, Kṛṣṇa is very pleased.
(Sri Caitanya Caritamrta----2:8:214---- purport).

Therefore one should accept the mood of the gopīs in their service. In such a transcendental mood, one should always think of the pastimes of Śrī Rādhā and Kṛṣṇa.
(Sri Caitanya Caritamrta----2:8:228----translation).

After thinking of Rādhā and Kṛṣṇa and Their pastimes for a long time and after getting completely free from material contamination, one is transferred to the spiritual world. There the devotee attains an opportunity to serve Rādhā and Kṛṣṇa as one of the gopīs.
Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura comments that the word siddha-deha, "perfected spiritual body," refers to a body beyond the material gross body composed of five elements and the subtle astral body composed of mind, intelligence and false ego. In other words, one attains a completely spiritual body fit to render service to the transcendental couple Rādhā and Kṛṣṇa: sarvopādhi-vinirmuktaṁ tat-paratvena nirmalam. When one is situated in his spiritual body, which is beyond this gross and subtle material body, he is fit to serve Rādhā and Kṛṣṇa.
(Sri Caitanya Caritamrta----2:8:229----translation and purport).

One is elevated to the spiritual world by the spiritual body and is situated either in Goloka Vṛndāvana or in another Vaikuṇṭha planet. In the spiritual body there are no longer material desires, and one is fully satisfied by rendering service to the Supreme Personality of Godhead, Rādhā and Kṛṣṇa. This is the platform of bhakti (hṛṣīkeṇa hṛṣīkeśa-sevanaṁ bhaktir ucyate (CC.2:19:170). When the spiritual body, mind and senses are completely purified, one can render service to the Supreme Personality of Godhead and His consort. In Vaikuṇṭha the consort is Lakṣmī, and in Goloka Vṛndāvana the consort is Śrīmatī Rādhārāṇī. In the spiritual body, free from material contamination, one can serve Rādhā-Kṛṣṇa and Lakṣmī-Nārāyaṇa. When one is thus spiritually situated, he no longer thinks of his own personal sense gratification. This spiritual body is called siddha-deha, the body by which one can render transcendental service unto Rādhā and Kṛṣṇa. The process is that of engaging the transcendental senses in loving devotional service. This verse specifically mentions, sakhī-bhāve pāya rādhā-kṛṣṇera caraṇa: only transcendentally elevated persons in the mood of the gopīs can engage in the service of the lotus feet of Rādhā and Kṛṣṇa.
(Sri Caitanya Caritamrta----2:8:229---- purport).

One can worship Lakṣmī-Nārāyaṇa by the process of vidhi-mārga, worshiping the Lord with regulative principles according to the instructions of the śāstra and the spiritual master. But the Supreme Personality of Godhead, Rādhā-Kṛṣṇa, cannot be directly worshiped by this process. The dealings between Rādhā and Kṛṣṇa and the gopīs are devoid of the opulences of Lakṣmī-Nārāyaṇa. The process of vidhi-mārga, following the regulative principles, is utilized in the worship of Lakṣmī-Nārāyaṇa, whereas the process of spontaneous service—following in the footsteps of the gopīs, who are the denizens of Vṛndāvana—is transcendentally more advanced and is the process whereby Rādhā and Kṛṣṇa are worshiped. One cannot attain this elevated position while worshiping the Lord in His opulence. Those attracted by the conjugal love between Rādhā and Kṛṣṇa must follow in the footsteps of the gopīs. Only then is it possible to enter into the Lord's service in Goloka Vṛndāvana and directly associate with Rādhā and Kṛṣṇa.
(Sri Caitanya Caritamrta----2:8:230---- purport).