Svarūpa Dāmodara Gosvāmī has described Lord Caitanya as Kṛṣṇa Himself with the attitude of Rādhārāṇī, or a combination of Rādhā and Kṛṣṇa. The intention of Lord Caitanya is to taste Kṛṣṇa’s sweetness in transcendental love. He does not care to think of Himself as Kṛṣṇa, because He wants the position of Rādhārāṇī. We should remember this. A class of so-called devotees called the nadīyā-nāgarīs or gaura-nāgarīs pretend that they have the sentiment of gopīs toward Lord Caitanya, but they do not realize that He placed Himself not as the enjoyer, Kṛṣṇa, but as the enjoyed, the devotee of Kṛṣṇa.
(Sri Caitanya Caritamrta------1:4:41-------purport).

Lord Caitanya Mahāprabhu produced so many fruits of devotional service that they must be distributed all over the world; otherwise, how could He alone relish and taste each and every fruit? The original reason that Lord Śrī Kṛṣṇa descended as Śrī Caitanya Mahāprabhu was to understand Śrīmatī Rādhārāṇī’s love for Kṛṣṇa and to taste that love. The fruits of the tree of devotional service were innumerable, and therefore He wanted to distribute them unrestrictedly to everyone. Śrīla Rūpa Gosvāmī therefore writes:

anarpita-carīṁ cirāt karuṇayāvatīrṇaḥ kalau
samarpayitum unnatojjvala-rasāṁ sva-bhakti-śriyam
hariḥ puraṭa-sundara-dyuti-kadamba-sandīpitaḥ
sadā hṛdaya-kandare sphuratu vaḥ śacī-nandanaḥ
There were many previous incarnations of the Supreme Personality of Godhead, but none were so generous, kind and magnanimous as Śrī Caitanya Mahāprabhu, for He distributed the most confidential aspect of devotional service, namely, the conjugal love of Rādhā and Kṛṣṇa. Therefore Śrī Rūpa Gosvāmī Prabhupāda desires that Śrī Caitanya Mahāprabhu live perpetually in the hearts of all devotees, for thus they can understand and relish the loving affairs of Śrīmatī Rādhārāṇī and Kṛṣṇa.
(Sri Caitanya Caritamrta------1:9:37-------purport).

In separation from Kṛṣṇa, Śrī Caitanya Mahāprabhu relished all these ecstatic activities, and thus He fulfilled His own desires. In the beginning of the Caitanya-caritāmṛta it is said that Lord Caitanya appeared in order to taste the feelings Rādhārāṇī felt upon seeing Kṛṣṇa. Kṛṣṇa Himself could not understand the ecstatic feelings of Rādhārāṇī toward Him, and therefore He desired to accept the role of Rādhārāṇī and thereby taste these feelings. Lord Caitanya is Kṛṣṇa with the feelings of Rādhārāṇī; in other words, He is a combination of Rādhā and Kṛṣṇa. It is therefore said, śrī-kṛṣṇa-caitanya rādhā-kṛṣṇa nahe anya. By worshiping Śrī Caitanya Mahāprabhu alone, one can relish the loving affairs of Rādhā and Kṛṣṇa together. One should therefore try to understand Rādhā-Kṛṣṇa not directly but through Śrī Caitanya Mahāprabhu and through His devotees. Śrīla Narottama dāsa Ṭhākura therefore says, rūpa-raghunātha-pade haibe ākuti, kabe hāma bujhaba se yugala-pīriti: “When shall I develop a mentality of service toward Śrī Rūpa Gosvāmī, Sanātana Gosvāmī, Raghunātha dāsa Gosvāmī and the other devotees of Lord Caitanya and thus become eligible to understand the pastimes of Śrī Rādhā and Kṛṣṇa?”
(Sri Caitanya Caritamrta------1:13:43-------translation and purport).

To taste the mellows of Śrīmatī Rādhārāṇī’s loving affairs in Her relationship with Kṛṣṇa, and to understand the reservoir of pleasure in Kṛṣṇa, Kṛṣṇa Himself, as Śrī Caitanya Mahāprabhu, accepted the mood of Rādhārāṇī.
In this connection Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura writes in his Anubhāṣya, “Śrī Gaurasundara is Kṛṣṇa Himself with the attitude of Śrīmatī Rādhārāṇī. Śrī Caitanya Mahāprabhu never gave up the attitude of the gopīs. He remained everlastingly predominated by Kṛṣṇa and never accepted the part of the predominator by imitating conjugal love with an ordinary woman, as sahajiyās generally do. He never placed Himself in the position of a debauchee. Lusty materialists like the members of the sahajiyā-sampradāya hanker after women, even others’ wives. But when they try to ascribe the responsibility for their lusty activities to Śrī Caitanya Mahāprabhu, they become offenders to Svarūpa Dāmodara and Śrīla Vṛndāvana dāsa Ṭhākura. In Śrī Caitanya-bhāgavata, Ādi-khaṇḍa, Chapter Fifteen, it is said:

sabe para-strīra prati nāhi parihāsa
strī dekhi’ dūre prabhu hayena eka-pāśa
‘Śrī Caitanya Mahāprabhu never even joked with others’ wives. As soon as He saw a woman coming, He would immediately give her ample room to pass without talking.’ He was extremely strict regarding the association of women. The sahajiyās, however, pose as followers of Śrī Caitanya Mahāprabhu although they indulge in lusty affairs with women. In His youth Lord Caitanya was very humorous with everyone, but He never joked with any woman, nor in this incarnation did He talk about women. The gaurāṅga-nāgarī party is not approved by Śrī Caitanya Mahāprabhu or Vṛndāvana dāsa Ṭhākura. Even though one may offer all kinds of prayers to Caitanya Mahāprabhu, one should strictly avoid worshiping Him as the Gaurāṅga Nāgara. The personal behavior of Śrī Caitanya Mahāprabhu and the verses written by Śrī Vṛndāvana dāsa Ṭhākura have completely repudiated the lusty desires of the gaurāṅga-nāgarīs.”
(Sri Caitanya Caritamrta------1:17:276-------translation and purport).

Lord Caitanya Mahāprabhu used to sing this song [seita parāṇa-nātha] especially during the latter part of the day, and He would think, “Let Me take Kṛṣṇa and go back to Vṛndāvana.” This ecstasy was always filling His heart. Being always absorbed in the ecstasy of Śrīmatī Rādhārāṇī, Śrī Caitanya Mahāprabhu felt the same separation from Kṛṣṇa that Śrīmatī Rādhārāṇī felt when Kṛṣṇa left Vṛndāvana and went to Mathurā. This ecstatic feeling is very helpful in attaining love of God in separation. Śrī Caitanya Mahāprabhu has taught everyone that one should not be overly anxious to see the Lord, but should rather feel separation from Him in ecstasy. It is actually better to feel separation from Him than to desire to see Him face to face. When the gopīs of Vṛndāvana, the residents of Gokula, met Kṛṣṇa at Kurukṣetra during the solar eclipse, they wanted to take Kṛṣṇa back to Vṛndāvana. Śrī Kṛṣṇa Caitanya Mahāprabhu also felt the same ecstasy as soon as He saw Jagannātha in the temple or on the Ratha-yātrā car. The gopīs of Vṛndāvana did not like the opulence of Dvārakā. They wanted to take Kṛṣṇa to the village of Vṛndāvana and enjoy His company in the groves. This desire was also felt by Śrī Caitanya Mahāprabhu, and He danced in ecstasy before the Ratha-yātrā festival when Lord Jagannātha went to Guṇḍicā.
(Sri Caitanya Caritamrta------2:1:56-------translation and purport).

Their natural love for each other was awakened in them both, and they embraced and fell to the ground. Śrīla Rāmānanda Rāya was an incarnation of the gopī Viśākhā. Since Śrī Caitanya Mahāprabhu was Lord Kṛṣṇa Himself, there was naturally an awakening of love between Viśākhā and Kṛṣṇa. Śrī Kṛṣṇa Caitanya Mahāprabhu is the combination of Śrīmatī Rādhārāṇī and Kṛṣṇa, and the gopī Viśākhā is a principal gopī assisting Śrīmatī Rādhārāṇī. Thus the natural love between Rāmānanda Rāya and Śrī Caitanya Mahāprabhu awakened and they embraced.
(Sri Caitanya Caritamrta------2:8:23-------translation and purport).

Śrī Caitanya Mahāprabhu is rādhā-bhāva-dyuti-suvalita, that is, Kṛṣṇa Himself assuming the part of Śrīmatī Rādhārāṇī in order to understand Kṛṣṇa. Lord Jagannātha-deva is Kṛṣṇa, and Śrī Kṛṣṇa Caitanya Mahāprabhu is Śrīmatī Rādhārāṇī. Caitanya Mahāprabhu’s leading Lord Jagannātha toward the Guṇḍicā temple corresponded to Śrīmatī Rādhārāṇī’s leading Kṛṣṇa toward Vṛndāvana. Śrī Kṣetra, Jagannātha Purī, was taken as the kingdom of Dvārakā, the place where Kṛṣṇa enjoys supreme opulence. But He was being led by Śrī Caitanya Mahāprabhu to Vṛndāvana, the simple village where all the inhabitants are filled with ecstatic love for Kṛṣṇa. Śrī Kṣetra is a place of aiśvarya-līlā, just as Vṛndāvana is the place of mādhurya-līlā. Śrī Caitanya Mahāprabhu’s following at the rear of the ratha indicated that Lord Jagannātha, Kṛṣṇa, was forgetting the inhabitants of Vṛndāvana. Although Kṛṣṇa neglected the inhabitants of Vṛndāvana, He could not forget them. Thus in His opulent Ratha-yātrā, He was returning to Vṛndāvana. In the role of Śrīmatī Rādhārāṇī, Śrī Caitanya Mahāprabhu was examining whether the Lord still remembered the inhabitants of Vṛndāvana. When Caitanya Mahāprabhu fell behind the Ratha car, Jagannātha-deva, Kṛṣṇa Himself, understood the mind of Śrīmatī Rādhārāṇī. Therefore, Jagannātha sometimes fell behind the dancing Śrī Caitanya Mahāprabhu to indicate to Śrīmatī Rādhārāṇī that He had not forgotten. Thus Lord Jagannātha would stop the forward march of the ratha and wait at a standstill. In this way Lord Jagannātha agreed that without the ecstasy of Śrīmatī Rādhārāṇī He could not feel satisfied. While Jagannātha was thus waiting, Gaurasundara, Caitanya Mahāprabhu, in His ecstasy of Śrīmatī Rādhārāṇī, immediately came forward to Kṛṣṇa. At such times, Lord Jagannātha would proceed ahead very slowly. These competitive exchanges were all part of the love affair between Kṛṣṇa and Śrīmatī Rādhārāṇī. In that competition between Lord Caitanya’s ecstasy for Jagannātha and Jagannātha’s ecstasy for Śrīmatī Rādhārāṇī, Caitanya Mahāprabhu emerged successful.
(Sri Caitanya Caritamrta------2:13:119-----purport).