KEITH'S MYSTERY WOMAN

The couple's hometown is reportedly buzzing with speculation about whether Keith has moved on since the split - and who he might be dating.

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The Daily Mail quoted a Nashville music business PR saying, "The rumour is that he's with a younger woman in the business. Everyone wants to know who, but so far, that's a mystery."

TMZ quoted multiple sources close to Nicole, who told the outlet she was "shocked" and that "all signs point to the fact that Keith is with another woman."