I remember the plot but can't find the story.
A decides that he wants to be cuckolded and tries to get friend, B, involved.
Wife and B have evenings out and she pretends to husband that he has, indeed, been cuckolded.
Wife realises that evenings with B are better than evenings with husband and decides to divorce but tells husband that her and B have never cuckolded him.
Husband is mad and confronts B at work.
Any ideas as to title?