updated 06/09/2010 AT 9:00 AM ET
•originally published 06/09/2010 AT 8:00 AM ET
Two years after getting her heart broken by her husband’s relationship with her best friend, Shania Twain is legally single again – which is not to say she’s back on the market.
Even as her divorce from Robert “Mutt” Lange was quietly being finalized in Switzerland, Twain, 44, was looking like a woman in love at the Swiss Red Cross Ball on May 29. Dancing the night away with Frédéric Thiébaud (the other woman’s ex-husband), 40, “she was radiantly happy,” says a source close to her.
“Her happiness certainly shone through,” says her friend Stéphane Lagonico, an ambassador for the Swiss Red Cross, who organized the ball. “They are a great addition to each other’s lives.”