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The couple's split was announced on Tuesday.
ROBERT "Mutt" LANGE, SHANIA TWAIN's hubby of 14 years, is calling their split "unfortunate," People reports.
"It's just an unfortunate thing that's happened," Lange tells the mag. "It's literally just a growing apart, that's all."
And a source close to Shania tells People: "She's devastated. … She's getting through it with a very close-knit group of family and friends."
Lange and Shania's break-up was announced on Tuesday. The couple have one son together, EJA D'ANGELO.