Consider fiddle? Wife and husband after sex (3,4)
I believe the answer is:
toy with
'consider' is the definition.
(thesaurus)
'fiddle? wife and husband after sex' is the wordplay.
I cannot really see how this works, but
'fiddle?' could be 'toy' (synonyms) and 'toy' is present in the answer.
'wife' could be 'w' (abbreviation) and 'w' is located in the answer.
'husband' could be 'h' (abbreviation) and 'h' is located in the answer.
'sex' could be 'it' (common euphemism) and 'it' is located in the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for toy with that I've seen is " Tease".)