"GMA" went inside their rehearsals to get some insight into the dancing pair's dynamic.
"I think we have a very ... old married couple relationship," she said, laughing. "I voice what I want him to do. He complains back, tells me what hurts. I tell him to keep quiet and just keep doing."
"We honestly believe that we were given Dougie because we are in a position to make a difference," he said.
Flutie is now launching a new campaign called Autism on the Go.
"This will, when it's all said and done, be the thing I'm most proud of because it will go on much longer than a football career went on or game or season or the mirror ball or anything else," he said.
It was that same deep emotion that inspired Flutie's April 3 performance. His touching waltz was dedicated to his parents, Joan and Dick Flutie, who died within hours of each other in 2015 after 56 years of marriage.
On the morning of his father's death, Flutie said he got a text from his sister as he was on his way to the family.
He added: "At some point she realizes 'I don't want to go on without him.'"