Abuse married lover (7)
I believe the answer is:
admirer
'lover' is the definition.
(I know that admirer is a type of lover)
'abuse married' is the wordplay.
'abuse' indicates an anagram.
'married' with letters rearranged gives 'ADMIRER'.
(Other definitions for admirer that I've seen before include "Person who fancies another" , "Married to one who thinks highly of" , "One who thinks highly or romantically of" , "Married (anag) -- lover" , "A young lady's beau - he thinks she's great" .)