A sweep, perhaps, with warm-hearted love (3)
I believe the answer is:
oar
'a sweep' is the definition.
(I've seen this in another clue)
'perhaps with warm-hearted love' is the wordplay.
'perhaps' indicates anagramming the letters.
'with' is a charade indicator (letters next to each other).
'hearted' indicates the central letters.
'love' becomes 'o' (love means zero in tennis).
The central letters of 'warm' are 'ar'.
'ar' next to 'o' is 'aro'.
'aro' anagrammed gives 'OAR'.
(Other definitions for oar that I've seen before include "Sweep" , "Rowing blade" , "Bladed pole" , "Crew member" , "Rower" .)