A source said that the actors are "so happy" to be welcoming a son this fall, reported Us magazine.
"They planned for this baby and now seemed as good of a time as ever. They really will be the best parents," the source added.
The duo met on the set of 2007 "Take Me Home Tonight" and and married on July 9, 2009 in a small ceremony in Bali.
They announced they are expecting their first child in May.
"Maybe it's just her energy, but she hasn't been having trouble with the pregnancy at all! They are so excited. Having a kid is a big deal to both of them - they didn't take this lightly," a source said.
