Guide's American idol out of love (5)
I believe the answer is:
usher
'guide's' is the definition.
(ushering is a kind of guiding)
'american idol out of love' is the wordplay.
'american' becomes 'us'.
'idol' becomes 'hero' (I've seen this before).
'out of' is a deletion indicator.
'love' becomes 'o' (In tennis, 'love' means 'zero').
'hero' with 'o' taken out is 'her'.
'us'+'her'='USHER'
(Other definitions for usher that I've seen before include "One who should lead the way" , "Doorkeeper in parliament or 29 down" , "Doorkeeper; one showing to place" , "Helper at wedding" , "Theatre guide" .)