The Supreme Personality of Godhead is known as Krishna. Krishna means all-attractive. But he also has another name, Gopinatha, the master of the gopis. Of all the gopis Srimati Radharani is the topmost. Not everyone is the servant of the servant of the dearmost servant of the master of the gopis in the mood of conjugal love. Some of Lord Krishna's devotees serve Him as friends. I suppose I could find some stories of Krishna's friends and how they relate to Radharani it's just that I don't remember any specifically. Krishna's mother, Mother Jasoda also serves Lord Krishna in her own relationship, or rasa. And she loves Radharani just as much as she loves Krishna, I heard. So I just wanted to mention that there are all sorts of relationships one can have with Lord Krishna in the spiritual world. We won't all end up as gopis, will we? I don't have a clue really. I know a lot of devotees don't really think they want that particular relationship with Krishna, although I don't know why.