Rupa Goswami on Radha Bhava

… if one attaches oneself to Radha as her assistant and intimate friend, the intimacy that she experiences with Krishna becomes the experience of oneself, a handmaiden who is wholly identified with Sri Radha in service to her. This is the position of Radha’s manjari. Sri Radha is the vine of love that most fully embraces Sri Krishna, and the flower (manjari) of that vine is nourished as the vine itself is nourished. Love of Radha is tad-bhavaeccha-mayi madhurya rasa. However, Sri Rupa Goswami also refers to it as bhavollasa, and as we shall see, love of Radha constitutes the fullest measure of this term.

From Jaya Rupa! Jaya Radhe!.