(Note to other guys who want this from their wives: be respectful, don't pressure, and give her time to think about it. Fast-forward to this week, and my wife tells me she is interested in exploring this. She was curious about it and wondered if I really wanted it to happen or if it was just something I wanted to keep in our rotation of dirty talk. So, I was extremely relieved when her reaction was intrigue rather than disgust. Her views on sex had always been traditional, and she had always expressed a very strict idea of monogamy and commitment.
Several years back, I opened up to my wife about my fantasies of her sleeping with other men. I'm a straight guy, married to a straight woman for 15 years.