Ace party helping to make love (9)
I believe the answer is:
adoration
'love' is the definition.
(to adore someone is to love them)
'ace party helping' is the wordplay.
'ace' becomes 'a' (abbreviation).
'party' becomes 'do' (do is a kind of party).
'helping' becomes 'ration' (a ration is a serving or helping).
'a'+'do'+'ration'='ADORATION'
'to make' acts as a link.
(Other definitions for adoration that I've seen before include "enormous respect" , "Deep love and respect" , "Not a radio (anag.)" , "Hero-worship" , "holding someone up a lot" .)