Simon Cowell

Simon Cowell has quickly adapted to fatherhood.

Less than a month after his girlfriend, Lauren Silverman, welcomed their son Eric, the former American Idol judge tells Extra that he was "born to be a dad."

Though he was hesitant at first, Cowell said that as soon as Eric was born, he knew everything would be OK. "I actually said to Lauren beforehand, 'What if I like the dogs more than him?' because I've never had a baby before, and she said, 'You're gonna be absolutely fine,'" he told the TV news show.

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This is Cowell's first child and Silverman's second, though Cowell is open to the idea of expanding their family. "I wouldn't rule out [more children]," he said. "I had a brother when I was younger, so I kind of think it's cool to have two or three."

Watch Cowell's full interview below: