Country singers Keith Urban and Blake Shelton have become pals while filming their new TV talent show, The Road , and insiders said they're holding powwows – giving each other priceless tips on keeping their marriages strong, RadarOnline.com can reveal.

Shelton, 49, is wed to pop star Gwen Stefani , 55, while Urban, 57, is hubby to fellow Aussie, Big Little Lies star Nicole Kidman , 58. Article continues below advertisement

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An insider noted: "Blake has faced some rough patches with Gwen, but divorce is not an option. He'll do anything it takes to make sure they go the distance, and he can see Keith feels the same way.

"He really admires what Keith has built with

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