Be empathetic (6)
I believe the answer is:
'be empathetic' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for relate that I've seen before include "Give a report or show a connection" , "Show sympathy" , "Narrate in Tralee" , "how to get on?" , "Recite - marriage guidance organisation" .)