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Jeff Kravitz/ACMA2019/FilmMagic for ACM
While many people told them they were too young to get married, the "Marry Me" singer revealed the advice he received from Luke Bryan, who had become a good friend after Rhett opened for him on tour early in his career.
"Luke was like, 'Buddy, if you love her, then forget everybody else. You do what you want to do. You go marry her! You've gotta be true to yourself or nothing else matters.'"