Note proposal of love? (7)
I believe the answer is:
emotion
'love?' is the definition.
(love is a kind of emotion)
'note proposal' is the wordplay.
'note' becomes 'e' (musical note).
'proposal' becomes 'motion' (proposal at a meeting).
'e'+'motion'='EMOTION'
'of' is the link.
(Other definitions for emotion that I've seen before include "Anger, perhaps" , "Strong desire" , "Passion" , "Fear possibly" , "Feeling like love or hate" .)