The press are saying he was named in their divorce papers. It wouldn't be too far fetched to think a surrogate arrangement was made, or an agreement that she would raise the child with him in return for £££. Maybe having Sinitta's children round a lot has made him broody - but who knows? Maybe he actually had intercourse with a woman? Stranger things have happened!
It's Simon Cowell, and he has the power to silence or put out info on whatever he wants in the media.
The more convoluted this gets the more I just raise an eyebrow, figure old Botox Queen is at it again (and not with this woman) and switch off.