Blake Shelton is brewing a new bromance, and this time, it's not with his buddy from 'The Voice,' Adam Levine. It's actually someone very familiar to country red carpets: Carrie Underwood's husband Mike Fisher!

While Fisher and Shelton's wives were working hard on their new hit duet 'Somethin' Bad,' somethin' good was blossoming between the two guys.

“During the ACMs, we actually hung out quite a bit because we were there for a few days and our husbands got to talk,” Underwood tells 'Access Hollywood.'

“I think there’s a bit of a bromance going on," she adds with a laugh. "[Blake’s] got a lot of bromances going on. I won’t talk to Mike about it -- I don’t want to make him jealous!”

The hard work that Lambert and Underwood put into 'Somethin' Bad' paid off -- they've had several fiery performances, plus a fantastic single and a music video to show for it.

In addition, Fisher and Shelton can now call one another a friend. And, according to the 'Blown Away' singer, it can be a rare affinity to find friends that understand when you need to leave on tour for months upon months, or are holed away writing your next record.

“It’s nice to have people that… understand your life,” Underwood explains. “I have so many friends that have really nothing to do with the music business, it’s nice to be able to hang out with some people that get it all."

Levine better watch out if he doesn't want to lose his bromance partner. Perhaps he should remind the 'Boys 'Round Here' hitmaker just how sexy he is .. with another big and sexy gift!

Watch Blake Shelton's Top Bromance Moments