Recording about husband's love (7)
I believe the answer is:
nothing
'love' is the definition.
(I've seen this before)
'recording about husband's' is the wordplay.
'recording' becomes 'noting' (I've seen this before**).
'about' is an insertion indicator.
'husband' becomes 'h'.
'noting' going around 'h' is 'NOTHING'.
(Other definitions for nothing that I've seen before include "What's in a vacuum?" , "One of those sweet sayings" , "Something of no concern" , "Zero, naught" , "Item of no importance" .)