By peoplestaff225
Updated July 10, 2008 04:00 PM

Dad-to-be Pete Wentz may be known for his rockstar ways, but today the Fall Out Boy bassist told radio host Ryan Seacrest, "I’m becoming my dad."

Pete, 29, says that so far, his main daddy duties have been "cleaning up puppy poop" and taking care of wife Ashlee Simpson-Wentz, 23, who’s currently craving "green olives on everything." Of doctor visits and fatherhood, Pete says "It’s really, really, really, really exciting."

The couple has not revealed their baby’s sex, and Pete claims not to know, saying he’s "hoping the doctor will be able to see something in the next couple of weeks." They expect their baby in the fall.

Source:; Photo by Ilya Dreyvitser/

Thanks to CBB reader Mary Beth.