Appeal of girl disheartened with love affair (7)
I believe the answer is:
glamour
'appeal' is the definition.
(I've seen this before)
'girl disheartened with love affair' is the wordplay.
'disheartened' says to hollow out the word (remove centre letters).
'with' is a charade indicator (letters next to each other).
'love affair' becomes 'amour' (I've seen this before).
'girl' with its centre removed is 'gl'.
'gl'+'amour'='GLAMOUR'
'of' acts as a link.
(Other definitions for glamour that I've seen before include "Beauty created by clothes and make-up" , "Appealing and beautiful quality" , "Excitingly attractive quality" , "Romantic aura or sparkle" , "Fascinating beauty" .)