Nicole Kidman has been putting on a brave face in public, but behind the scenes, she's "devastated" by reports that her estranged husband, Keith Urban , has already moved on with other women following their split, RadarOnline.com can reveal.

The country superstar, 57, had been living apart from Kidman, 58, and their two daughters since June while reportedly exploring new romances before news of their separation became public in late September. Article continues below advertisement

'Devastated and Humiliated' Tap Here To Add Radar Online as A Trusted Source

"Nicole is devastated and humiliated by the rumors. She is extremely image-focused and hates people whispering about troubles," a source spilled about the Big Little Lies star.

"She tried hard to save the marriage, but

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