Be inquisitive about love and a kiss with a deputy (5)
I believe the answer is:
proxy
'deputy' is the definition.
(synonyms)
'be inquisitive about love and a kiss' is the wordplay.
'be inquisitive' becomes 'pry' (I've seen this in another clue).
'about' indicates putting letters inside.
'love' becomes 'o' (love means zero in tennis).
'and' is a charade indicator (letters next to each other).
'a kiss' becomes 'x' (X can represent a kiss).
'o'+'x'='ox'
'pry' going around 'ox' is 'PROXY'.
'with a' acts as a link.
(Other definitions for proxy that I've seen before include "authoritative document" , "Authority to represent others" , "Stand in" , "Agent (for eg voting)" , "Stand-in, agent" .)