Within Vaishnavism

the Vaishnava devotional or bhakti traditions of Hinduism that focus on Krishna, Radha is Krishna's friend and advisor. For some of the adherents of these traditions, her importance approaches or even exceeds that of Krishna. She is considered to be his original shakti, the supreme goddess in both the Nimbarka Sampradaya and following the advent of Chaitanya Mahaprabhu also within the Gaudiya Vaishnava tradition. Other gopis are usually considered to be her maidservants, with Radha having the prominent position of Krishna's favour.
Her connection to Krishna is of two types: svakiya-rasa (married relationship) and parakiya-rasa (a relationship signified with eternal mental "love").
In the Nimbarka Sampradaya, Radha's relationship with Krishna is characterised by the svakiya-rasa, based on texts in the Brahma Vaivarta Purana and the Garga Samhita describing the wedding of Radha and Krishna. The Gaudiya tradition focuses upon parakiya-rasa as the highest form of love, wherein Radha and Krishna share thoughts even through separation. The love the gopis feel for Krishna is also described in this esoteric manner as the highest platform of spontaneous love of God, and not of a mundane sexual nature.
Proponents of the Gaudiya and Nimbarka schools of Vaishnavism give the highly esoteric nature of Radha's relationship to Krishna as the reason why her story is not mentioned in detail in the other Puranic