Shania Twain Is Engaged to the Ex of the Woman Who Stole Her Husband 10.54K Max Read 12/21/10 03:10AM Filed to: Romance Romance Shania Twain Frederic thiebaud mutt lange Engagements Relationships Singer Shania Twain is engaged to businessman Frédéric Thiébaud (not pictured). They met through their ex-spouses, who left Twain and Thiébaud for each other. So it all worked out! Can't wait to read the Times "Vows" article on this!