EXCLUSIVE: Luke Bryan jokes Gwen Stefani might need a 'support group' to date Blake Shelton

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EXCLUSIVE: Luke Bryan Jokes Gwen Stefani Needs a 'Support Group' to Date Blake Shelton

Academy of Country Music Awards co-hosts Luke Bryan and Dierks Bentley stopped by to chat with ET before Sunday's big show and they dished on some of the biggest stars expected to appear.

Bryan has co-hosted country music's biggest night since 2013, but this year he's recruited Bentley to fill the slot left vacant by Blake Shelton. Bryan had a lot to say about his former co-host and his pal's new flame Gwen Stefani.

WATCH: Dierks Bentley Replaces Blake Shelton as Luke Bryan's ACM Awards Co-Host

"I think when you date Blake Shelton ... I just hope it's not affecting her IQ," joked Bryan, who claimed that he doesn't know if Stefani will attend the show over the weekend. "Maybe she's got a good support group around her to keep the positive influences of Blake versus the negative."

PHOTOS: Luke Bryan through the years

22 PHOTOS
Luke Bryan through the years
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EXCLUSIVE: Luke Bryan jokes Gwen Stefani might need a 'support group' to date Blake Shelton
LOS ANGELES, CA - NOVEMBER 23: Singer Luke Bryan poses in the press room at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Jason LaVeris/FilmMagic)
NASHVILLE, TN - DECEMBER 15: Luke Bryan performs onstage at the 2014 American Country Countdown Awards at Music City Center on December 15, 2014 in Nashville, Tennessee. (Photo by Kevin Winter/Getty Images)
NASHVILLE, TN - DECEMBER 15: Recording artist Luke Bryan, winner of the Male Vocalist of the Year award, poses in the press room during the 2014 American Country Countdown Awards at Music City Center on December 15, 2014 in Nashville, Tennessee. (Photo by Terry Wyatt/WireImage)
LOS ANGELES, CA - NOVEMBER 23: Recording artists Luke Bryan (L) and Taylor Swift attend the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Christopher Polk/AMA2014/Getty Images for DCP)
NEW YORK, NY - AUGUST 08: Country singer Luke Bryan Performs On ABC's 'Good Morning America' at Rumsey Playfield, Central Park on August 8, 2014 in New York City. (Photo by Mike Pont/FilmMagic)
FOXBOROUGH, MA - AUGUST 10: Luke Bryan performs in concert at Gillette Stadium on Sunday, August 10, 2014. (Photo by Matthew J. Lee/The Boston Globe via Getty Images)
CLARKSTON, MI - JUNE 19: Luke Bryan performs in support of his 'That's My Kind of Night Tour' at DTE Energy Music Theater on June 19, 2014 in Clarkston, Michigan. (Photo by Scott Legato/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Singer/songwriter Luke Bryan (R) and Caroline Boyer attend the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Jeff Kravitz/AMA2014/FilmMagic)
NASHVILLE, TN - NOVEMBER 05: Luke Bryan speaks in the press room with his award for Entertainer of the Year during the 48th annual CMA awards at the Bridgestone Arena on November 5, 2014 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)
NASHVILLE, TN - NOVEMBER 05: Luke Bryan performs during the 48th annual CMA Awards at the Bridgestone Arena on November 5, 2014 in Nashville, Tennessee. (Photo by Rick Diamond/Getty Images)
NASHVILLE, TN - NOVEMBER 04: (L-R) Dustin Lynch and Luke Bryan attend the 62nd annual BMI Country awards on November 4, 2014 in Nashville, Tennessee. (Photo by Erika Goldring/FilmMagic)
CONCORD, CA - OCTOBER 17: Luke Bryan performs during the 'That's My Kind of Night' tour at the Concord Pavilion on October 17, 2014 in Concord, California. (Photo by C Flanigan/FilmMagic)
SAN ANTONIO, TX - SEPTEMBER 18: Luke Bryan performs in concert at the AT&T Center on September 18, 2014 in San Antonio, Texas. (Photo by Gary Miller/Getty Images)
NEW YORK, NY - SEPTEMBER 14: Luke Bryan performs at Barclays Center on September 14, 2014 in the Brooklyn borough of New York City. (Photo by John Lamparski/WireImage)
NEW YORK, NY - SEPTEMBER 14: Luke Bryan performs at Barclays Center on September 14, 2014 in the Brooklyn borough of New York City. (Photo by John Lamparski/WireImage)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0121 -- Pictured: Musical guest Luke Bryan performs on September 10, 2014 -- (Photo by: Douglas Gorenstein/NBC/NBCU Photo Bank via Getty Images)
NEW YORK, NY - SEPTEMBER 09: Luke Bryan performs onstage at Fashion Rocks 2014 presented by Three Lions Entertainment at Barclays Center of Brooklyn on September 9, 2014 in New York City. (Photo by Kevin Mazur/Getty Images for Three Lions Entertainment)
LOS ANGELES, CA - NOVEMBER 23: Singer Luke Bryan poses in the press room at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Jason LaVeris/FilmMagic)
NEW YORK, NY - SEPTEMBER 1: Luke Bryan and his wife Caroline Boyer Bryan attend Day 8 of the 2014 US Open at USTA Billie Jean King National Tennis Center on September 1, 2014 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Jean Catuffe/GC Images)
NEW YORK, NY - AUGUST 08: Amy Robach, Connie Britton, Luke Bryan filming the season finale of 'Nashville' after his apperance on ABC-Tv's 'Good Morning America' on August 8, 2014 in New York City. (Photo by Steve Sands/GC Images)
NASHVILLE, TN - JUNE 05: Luke Bryan attends a press conference at the 2014 CMA Festival on June 5, 2014 in Nashville, Tennessee. (Photo by Terry Wyatt/Getty Images)
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Shelton began dating Stefani shortly after calling it quits with country star Miranda Lambert last summer. Shelton and Lambert are expected to give separate performances at the ACM Awards and Bryan couldn't hide his astonishment at all the accomplishments the country queen has achieved.

"I don't think anybody's won more ACM awards in history than Miranda," Bryan said. "I think Miranda is Miranda, because she brings so much energy."

WATCH: Video Evidence That Dierks Bentley Is Just the Best

For the past six years, Lambert has walked away with Female Vocalist of the Year, and on Sunday, she'll have a chance at her seventh trophy in the category.

Find out what happens when the 51st annual ACM Awards return to Las Vegas on Sunday, April 3, at the MGM Grand Garden Arena, airing live on CBS at 8 p.m. ET/PT.

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