The Dallas Cowboys quarterback revealed that having their son Hawkins last month has made their marriage of one year stronger.
Romo told People: "If it's possible to bring you and your wife closer together, something like this really does.
"It strengthens your family values and your family and the love you have, which is already really strong. It's been a great blessing from God to put us in this situation. We feel very honoured."
Romo's wife is the 25-year-old sister of Gossip Girl actor Chace Crawford, and he revealed that her personality has made his job easier.
The 32-year-old sports personality added: "If you get a great wife who understands the demands of someone in athletics, I think that's important.
"I was lucky enough to find someone like that. She's a great mum and a great wife. It's been fun just hanging out with her and my son. It's been exciting."