Stewart and Mercurio are not activists. They live, quiet lives in Manhattan and like all parents, find joy and occasional frustration in raising a soon-to-be teenager.
"You know sometimes in life you have to say yes," Mercurio said. "And we said 'yes' to becoming this baby's parents and it was the best 'yes' decision we have ever made in our lives."
Stewart said the story speaks to a core of humanity.
"I mean, deep down when you strip away all those layers, all those labels, we're all human beings and were all connected by certain things that we need in our lives -- love," he said.