Tim Tebow and his wife Demi-Leigh are expecting their first baby together

And while Tim and Demi-Leigh, 29, are over the moon, they admit the reality of their new addition hasn't completely hit them yet.

“I feel like every time I say, 'Tim's going to be a dad!' It seems so surreal,” the former Miss Universe exclaimed, with Tim agreeing but adding, “When I'm with her and I see the belly growing, then it becomes so real.”

But when their little one finally arrives, Tim can't wait to see his wife as a mom.

“She will be extremely loyal and loving,” said the 2007 Heisman Trophy winner. “Demi is an extremely determined person. When she sets her mind to do something, she follows through on it – and I know she will A mom will too.