Cupid counterpart (4)
I believe the answer is:
eros
'cupid counterpart' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for eros that I've seen before include "Arrow-shooting god" , "Asteroid - Greek god of love" , "Greek god of sexual love, Cupid to the Romans" , "Greek name of Cupid" , "Arrow shooter" .)