Loved one is riling Fred unfortunately (10)
I believe the answer is:
girlfriend
'loved one' is the definition.
'riling fred unfortunately' is the wordplay.
'unfortunately' indicates anagramming the letters.
'riling'+'fred'='rilingfred'
'rilingfred' anagrammed gives 'GIRLFRIEND'.
'is' is the link.
(Other definitions for girlfriend that I've seen before include "Sweetheart" , "date" , "Female companion" , "Female squeeze" .)