In 2004, Ashton deflected rumours the couple were expecting their first child together. "Why am I the last person to find out everything?" he joked to reporters. "I'm going to be a daddy? God, no one tells me anything."
He has, however, admitted that he views Demi's three daughters by action hero Bruce Willis – Rumer, Scout and Tallulah - as his own.
"There is not a human being I could love more than those girls and their mom," he has said. "If I had a daughter that was of my blood, I wouldn't love that child any more."