The pair said they are "absolutely not" calling it quits, despite rumors that "seem to be running like crazy right now."
"It's perplexing," Hill said. "I don't know why 'happy' can't be a story."
McGraw said those kinds of rumors have been around for as long as they've been together.
"Since they first week we were married, those things were out," McGraw said. "We don't even think about it. The only time we ever think about it is worry about the kids. But they've been around it, too, so they laugh it off."
McGraw and Hill are currently in Las Vegas, where they are performing a series of shows together. They have three daughters, Gracie, 16, Maggie, 15, and Audrey, 11.