Even though he just welcomed a daughter Gia on Sept. 11, Mario Lopez is ready for more kids ... stat.

"I definitely want more kids," he says on The Ellen DeGeneres Show, airing Friday. "I'd love three or four to be honest."

He says his girlfriend Courtney Mazza is more "like one at a time. She's cool with that. She definitely wants them, but I kind of want them right away and that's where we have our differences. I think it's cool when the brothers and sisters (are close in age). I was raised close in age. When there is too much of a gap...I don't know, I just think it would be cooler."

Any wedding plans in their future?

"If she'll have me!" Lopez joked. "The jury is still out whether she wants to keep me."