The loving affairs of Śrī Rādhā and Kṛṣṇa are transcendental manifestations of the Lord's internal pleasure-giving potency. Although Rādhā and Kṛṣṇa are one in Their identity, They separated Themselves eternally. Now these two transcendental identities have again united, in the form of Śrī Kṛṣṇa Caitanya. I bow down to Him, who has manifested Himself with the sentiment and complexion of Śrīmatī Rādhārāṇī although He is Kṛṣṇa Himself.
(Sri Caitanya Caritamrta------1:1:5------translation).

When one is actually situated in that understanding, he becomes eligible to enter into the confidential pastimes of Rādhā and Kṛṣṇa. There is no alternative to understand Their confidential pastimes. This is confirmed in Govinda-līlāmṛta (10.17): "Although manifest, happy, expanded and unlimited, the emotional exchanges between Rādhā and Kṛṣṇa can only be understood by the damsels of Vraja or by their followers." Just as no one can understand the expansion of the spiritual energy of the Supreme Lord without His causeless mercy, no one can understand the transcendental sex life between Rādhā and Kṛṣṇa without following in the footsteps of the damsels of Vraja. The personal associates of Rādhārāṇī are called sakhīs, and Her near assistants are called mañjarīs. It is very difficult to express their dealings with Kṛṣṇa because they have no desire to mix with Kṛṣṇaor to enjoy Him personally. Rather, they are always ready to help Rādhārāṇī associate with Kṛṣṇa. Their affection for Kṛṣṇa and Rādhārāṇī is so pure that they are simply satisfied whenRādhā and Kṛṣṇa are together. Indeed, their transcendental pleasure is in seeing Rādhā and Kṛṣṇa united. The actual form of Rādhārāṇī is just like a creeper embracing the tree of Kṛṣṇa, and the damsels of Vraja, the associates of Rādhārāṇī, are just like the leaves and flowers of that creeper. When a creeper embraces a tree, the leaves and flowers as well as the creeper automatically embrace it. Govinda-līlāmṛta (10.16) confirms that Rādhārāṇī is the expansion of the pleasure potency of Kṛṣṇa and is compared with a creeper, and Her associates, the damsels of Vraja, are compared to the flowers and leaves of that creeper. When Rādhārāṇī and Kṛṣṇa enjoy Themselves, the damsels of Vraja relish the pleasure more than Rādhārāṇī Herself.
(Teachings of Lord Caitanya).

Just like we individual souls, we want to enjoy our senses. Similarly, God has also senses, He also wants to enjoy. Just like here, we see a young boy, a young girl is united. Similarly, you have seen our pictures, Kṛṣṇa, Rādhā and Kṛṣṇa, They are also united. There is also love, but that love is real. Here, the same thing, a reflection, is shadow. It is not real. The real love is there. There is no separation of that love. Here in this material world, because it is shadow, it is false, therefore there is separation. Love without separation is in God. Relationship between friend and friend, here it is breakable. As soon as there is some dissatisfaction, the friends separate. But if you make friendship with God, that is never separated. If you love Kṛṣṇa, that is never separated. If you accept Kṛṣṇa as your Son, that Son will never die. So these are the conception of God.
(Lecture on Bhagavad-Gita------4:1-------by Srila Prabhupada).

So Narottama dāsa Ṭhākura, he is offering his prayers to the Lord, haha prabhu nanda-suta, vṛṣabhānu-sutā-yuta: "My dear Lord, the son of King Nanda..." Kṛṣṇa's foster father's name was Nanda Mahārāja. So He is very much pleased when He is addressed as "the son of Nanda." (break) He is the original person. He has no father. But He accepts His devotee as His father. He accepts His devotee as mother. He is full in Himself, but still, He awaits the affection of father and mother. This is the beauty of Kṛṣṇa. So He takes pleasure when He is addressed as Nanda-suta, as Rādhā-ramana, like that. So Narottama dāsa Ṭhākura is addressing, "My dear Lord, the son of Nanda," and vṛṣabhānu-sutā-yuta, "and present with the daughter of King Vṛṣabhānu..." Rādhārāṇī's father was Vṛṣabhānu. He was also a king. So Kṛṣṇa and Rādhā is combined, and the devotee is addressing, "My dear son of Nanda, You are now united with the daughter of Vṛṣabhānu." Karunā karaha ei bāra: "Now You bestow Your mercy upon this fallen soul." Narottama dāsa kahe. This prayer is offered by Narottama dāsa Ṭhākura, a great ācārya of the Vaiṣṇava-sampradāya. He is saying for himself, "My dear Lord, don't kick me away." Narottama dāsa kahe, nā ṭheliho rāṅgā pāya: "Don't kick me away. Accept me in the service of Your lotus feet." Tomā bina ke āche āmāra: "I have no other shelter than Yourself." This is the sum and substance of all prayers. If you submit to the Lord that "I have no other shelter than Yourself," then He takes at once charge of you. But if you think that "My dear Lord," or "My dear God, I come to You for my daily bread, and as soon as You give me my daily bread, my business is finished with You..." No. That is also very good, but this is not love. This is business. The Kṛṣṇa wants lover not for any business.
(Lecture on Srimad Bhagavatam------7:9:12-13-------by Srila Prabhupada).