"The Middle" hitmaker tied the knot with fellow singer/songwriter Ryan Hurd in Nashville, Tennessee a year ago, and he used his personalised vows to make Maren smile as he referenced her favourite TV guilty pleasure.
The 28-year-old shared the news during an appearance on U.S. talk show "Watch What Happens Live" on Tuesday night, March 19, when she was a guest alongside "Real Housewives" cast member Teddi Mellencamp, the daughter of rocker John Mellencamp.
"I feel like a stalker...!" Maren exclaimed as she was asked about the unique vows. "He said, 'I promise to love you through everything... the blah blah blah to this and then watching 'Real Housewives' to this.' "
The singer also revealed Ryan is a secret fan of the reality show too, although it's not something he would admit in public.
"He likes to pretend he doesn't (watch the show), and then he somehow knows all of the information of the inner workings of what's going on," Maren smiled.
She and Ryan will celebrate their first wedding anniversary on Sunday, March 14.