“It’s not true” is what Shania Twaine’s husband Robert “Mutt” Lange is saying in response to questions about him Marie-Anne Thiebaud.

Shania Twain and her husband music producer Robert “Mutt” Lange were married for 14 years, but suddenly just days ago decided to end it forever.

Mutt Lange is an incredible producer. And Twain the favorite country singer.

Lange had told People that the two simple have “literally just a growing apart, that’s all.”

But now the magazine today went back to ask Lange about a new question. Says People: “But sources close to the situation say a third party was involved: Marie-Anne Thiébaud, a longtime secretary and manager of the couple’s chateau in Switzerland. “Mutt and Marie-Anne left their spouses for each other and are still in a relationship,” says one source.”Lange’s disputes the claims as false. “I’m not, no. It’s not true.”