Richards, who has been married to Mauricio Umansky for 16 years, told Good Morning America host Robin Roberts that a one-time slip-up doesn't have to mean the end of your marriage -- as long as you keep it to yourself.
"I've seen circumstances with people that I know are in love with their spouse and they made one mistake. And I said, -- this is somebody that I know, it's nobody that anybody knows, here, --listen, if this really was a one-time mistake, and you did not put this person in jeopardy, I personally think you should deal with it with yourself and with God. And not go and say, 'Honey look what I did,' because I knew that this would ruin their relationship and their life," Richards explained.
"So I said: 'It did not happen.'"
"And I can tell you that many, many, many years later they're happy and together and she did make that mistake and she has to carry that and live with that," Richards said.
Then, sensing that her husband would quickly be on the phone with his lawyer, she added, "And it's not me! My husband is over there sweating bullets."
Richards and Umansky have three daughters together, plus Richards' oldest daughter from a previous marriage.
And you'll see personalized content just for you whenever you click the My Feed .
SheKnows is making some changes!