The 'Baywatch' star, who met Cowell at 'Bitain's Got Talent', dated the media mogul from December 2012 to February 2013, reported Daily Mirror.
"Cowell was so much fun and was so smart and he's really interesting. He has a great sense of humour," she said.
Carmen said she thinks the 54-year-old will be a great father to baby Eric as he grows up.
"I'm sure little Eric Cowell will get a lot of knowledge of entertainment and business. He'll absolutely have to take over the family empire.