The essence of devotee care are six loving exchanges given by Rupa Gosvami:
dadati pratigrhnati
guhyam akhyati prcchati
bhunkte bhojayate caiva
sad-vidham priti-laksanam
Offering gifts in charity, accepting charitable gifts, revealing one's mind in confidence, inquiring confidentially, accepting prasada and offering prasada are the six symptoms of love shared by one devotee and another.
dadati pratigrhnati
guhyam akhyati prcchati
bhunkte bhojayate caiva
sad-vidham priti-laksanam
Offering gifts in charity, accepting charitable gifts, revealing one's mind in confidence, inquiring confidentially, accepting prasada and offering prasada are the six symptoms of love shared by one devotee and another.