"I wouldn't rule out [more children]," he told Extra's Terri Seymour (who he dated for six years). "I had a brother when I was younger, so I kind of think it's cool to have two or three … two."
Cowell says fatherhood initially made him nervous, but once Eric was born, he immediately became a natural.
"I actually said to Lauren beforehand, 'What if I like the dogs more than him?' and she said, 'You're gonna be absolutely fine,' and then literally within seconds of him being born, I got it! I was born to be a dad," he said.