Greek counterpart of Cupid (4)
I believe the answer is:
eros
'greek counterpart of cupid' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for eros that I've seen before include "Orbiter" , "Deity" , "Asteroid - Greek god of love" , "Greek god of love - see statue in Piccadilly" , "Roman god of love, Cupid" .)