Lange's relationship with Marie-Anne Thiébaud a longtime secretary and house manager at Twain and Lange's estate in Switzerland, was behind the breakup, say several sources familiar with the situation.
Marie Anne Thiébaud has slammed reports she broke up Shania and Mutt Lange's 14-year marriage. The secretary denies rumors she became close or had an affair with Robert.
‘When marriages break up they break up for all sorts of complicated reasons, it's never just one reason,’ she tells Us Weekly. ‘And those reasons should be kept private. If you're looking for a person that broke up a marriage then you have the wrong person. I'm not that person.’
Gold-digger!! Mutt is just plain stupid to leave someone as hot as Shania for that “secretary”!
Source 1, 2