Married eccentric lover (7)
I believe the answer is:
admirer
'lover' is the definition.
(admirer is a kind of lover)
'married eccentric' is the wordplay.
'eccentric' indicates an anagram.
'married' is an anagram of 'ADMIRER'.
(Other definitions for admirer that I've seen before include "Married (anag) -- lover" , "One who thinks highly or romantically of" , "girlfriend?" , "Hopeful lover?" , "Married to one who cherishes" .)