Keith Urban’s inner circle reportedly believe the 57-year-old singer suffering a “midlife crisis” amid news he split from Nicole Kidman .

His friends believe his divorce from the Oscar winner, 58, “the latest in a string of confusing choices,” sources told TMZ .

Insiders also told the outlet the singer abruptly fired his whole band, with whom he’s been working for 25 years, in January following the release of his album “High.”

Reps for Urban and Kidman did not immediately return Page Six’s requests for comment.

Page Six confirmed on Monday that the power couple, who tied the knot in 2006, parted ways after 19 years of marriage and two children.

“Sometimes relationships just run their course,” an insider told us, adding that the “Perfect Couple” star “did not want the separation an

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