Famous lover (8)
I believe the answer is:
casanova
'famous lover' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for casanova that I've seen before include "18th century Italian renowned for love affairs" , "Amorous person" , "Licentious man" , "Italian who wrote of his sexual exploits" , "Male womaniser, after 18th century Italian" .)