When the news broke recently that hackers had breached Ashley Madison, the dating website that helps married people find out-of-wedlock romance, the Internet responded with a lot of snark and not much sympathy.

We read Twitter so you don’t have to, and the take-away is this: If you cheat and get caught, you are getting what you deserve; and, if you cheat and get caught because you entered your personal information into a cheaters’ dating website whose marketing tagline is “Life is short. Have an affair,” you really are getting what you deserve.

But married daters looking for someone to defend their honor have at last found a spokesman: Brandon Wade, 45, the founder of the new website OpenMinded.com, which caters to individuals and couples looking for others with whom to engage in what Mr. Wade calls “ethical cheating.” This involves telling a spouse that you are going to be unfaithful, or including the spouse in new, outside-the-marriage relationships, he said.

“Monogamy in the traditional sense is not working for the majority of us,” said Mr. Wade, whose current wife is his third. “It has not worked out for me. There is a growing movement of people who are able to be honest with their mate that the traditional model isn’t working.”