tapta-kāñcana-gaurāṅgi
rādhe vṛndāvaneśvari
vṛṣabhānu-sute devi
praṇamāmi hari-priye
I offer my respects to Rādhārāṇī, whose bodily complexion is like molten gold and who is the Queen of Vṛndāvana. You are the daughter of King Vṛṣabhānu, and You are very dear to Lord Kṛṣṇa.
(Bhagavad-Gita----introduction).

All the other gopīs help increase the joy of Kṛṣṇa’s pastimes with Rādhārāṇī. The gopīs act as the instruments of Their mutual enjoyment. It is said that the gopīs are divided into five groups, namely the sakhīs, nitya-sakhīs, prāṇa-sakhīs, priya-sakhīs and parama-preṣṭha-sakhīs. All these fair-complexioned associates of Śrīmatī Rādhārāṇī, the Queen of Vṛndāvana-dhāma, are expert artists in evoking erotic sentiments in Kṛṣṇa. The parama-preṣṭha-sakhīs are eight in number, and in the ecstatic dealings of Kṛṣṇa and Rādhā they side sometimes with Kṛṣṇa and at other times with Rādhārāṇī, just to create a situation in which it appears that they favor one against the other. That makes the exchange of mellows more palatable.
(Sri Caitanya Caritamrta------1:4:217--------translation and purport).

Śrī Kṛṣṇa continued: “All the inhabitants of Vṛndāvana-dhāma—My mother, father, cowherd boyfriends and everything else—are like My life and soul. And among all the inhabitants of Vṛndāvana, the gopīs are My very life and soul. And among the gopīs, You, Śrīmatī Rādhārāṇī, are the chief. Therefore You are the very life of My life. Śrīmatī Rādhārāṇī is the center of all Vṛndāvana’s activities. In Vṛndāvana, Kṛṣṇa is the instrument of Śrīmatī Rādhārāṇī; therefore all the inhabitants of Vṛndāvana still chant “Jaya Rādhe!” From Kṛṣṇa’s own statement given herein, it appears that Rādhārāṇī is the Queen of Vṛndāvana and that Kṛṣṇa is simply Her decoration. Kṛṣṇa is known as Madana-mohana, the enchanter of Cupid, but Śrīmatī Rādhārāṇī is the enchanter of Kṛṣṇa. Consequently Śrīmatī Rādhārāṇī is called Madana-mohana-mohinī, the enchanter of the enchanter of Cupid.
(Sri Caitanya Caritamrta------2:13:150--------translation and purport).