"I would just like to bask in this engagement bliss for a little bit -- maybe for a year, maybe a little less -- but I would like to start [having kids] pretty soon," Murgatroyd told People magazine. "A little boy, and then a little girl.”
But if Chmerkovskiy, 35, had it his way he'd prefer to welcome a baby girl first.
"I think an older girl would be more responsible," he explained, before joking, "I was an exceptional older brother, but I think that was just a one-in-a-billion thing."
"You are one in a billion," Murgatroyd replied.
Murgatroyd, 29, added that she's not hesitant to have children with Chmerkovskiy because of the role he plays in his family.
"Maks always wants to take care of everybody, which, to me, was the biggest sign that he'll be an amazing father and take care of me the rest of my life," she explained.
Still, having children with his fiancée isn't only thing Chmerkovskiy is thinking about. "I'm looking forward to the 20 years after that, when the kids are out of the house and it's just the two of us again," he added. "I can't wait."