Tender god of love comes back (4)
I believe the answer is:
'tender' is the definition.
(I know that tender can be written as sore)
'god of love comes back' is the wordplay.
'god of love' becomes 'eros' (I've seen this before).
'comes back' is a reversal indicator.
'eros' in reverse letter order is 'SORE'.
(Other definitions for sore that I've seen before include "Hurting, painful" , "Painful, or the source of pain" , "Painfully sensitive" , "Aching; severe" , "Hard" .)