"People didn't believe a marriage that started that young would last. It did. It hasn't always been easy, but it has certainly been worth it," Madison's mom wrote about getting married young in a 2018 Instagram post . "Our waiter at dinner last night asked how many years we had been married. We said 28!! He said 'Wow, what's the SECRET?' Chad said, 'Keep God in the center of your relationship.' He thought for a minute and then said, 'That's not a secret to keep.'" As you can see, this lines up exactly with what 23-year-old Madison explained to Peter.