Once they settled into their routine, there was no more discussion of the two prior weekends or of a third one. Tom figured Abby was going to drop her plans for him to have a third weekend with another woman and was quite surprised three months later when she brought it up again over a glass of wine one Wednesday evening.

"Tom, Honey, uh, about this third time for you to be with another woman, uh, are you at all interested?"

"Honestly, no, not very much. I realized with Gwen how much more powerful sex with you is. It is an emotional thing as much if not more than a...