Returned symbol of love, being cross (4)
I believe the answer is:
sore
'being cross' is the definition.
(I've seen this in another clue)
'returned symbol of love' is the wordplay.
'returned' says the letters should be written backwards.
'symbol of love' becomes 'eros' (I've seen this in another clue).
'eros' reversed gives 'SORE'.
(Other definitions for sore that I've seen before include "Irritated or painful" , "Boil" , "Painful or tender" , "Painful - resentful" , "Painful, or the source of pain" .)