During the in-depth live interview with Good Morning Britain's Piers Morgan and Susanna Reid via satellite, Thomas opened up about a variety of topics, including his daughter's romance with Prince Harry, him staging paparazzi photos and when the royal couple may start a family.
Markle said that when they spoke for the very first time, late past year, Harry asked him how we was doing. "There's got to be a child in the making, somewhere soon", he told Good Morning Britain.
"First phone calls were, 'Daddy, I have a new boyfriend.' And I said, 'That's really nice.' And the next call was like, 'He's British, ' and I said, 'Well, that's really nice, '" he explained.
Markle said he gave Harry permission to marry his daughter over the phone. "Meghan cried, I'm sure-she did cry-and they both said, 'Take care of yourself, we are really anxious about you.' They said the important thing is that I get better".
The co-commentator said: "You can see a attractive Philip Tracey hat from the Duchess of Sussex, keeping it simple which seems to be the key to what she is wearing at the moment".
Mr Markle said he was "jealous" as the Prince of Wales walked his daughter down the aisle as he was receiving treatment for a heart attack.
Speaking of the moment, Thomas said: "I was honoured, I can't think of a better replacement than someone like Prince Charles".
Mr Markle said: "As long as they're happy and they have a great life and have some handsome children and do good things in the world, I can't ask for more".
He expects that his daughter will have a child with the Duke of Sussex "soon".
In the interview, Markle said he has yet to meet Prince Harry in person but described him as a "very nice man", a "gentleman" and "very likable". "He looked very handsome, and my daughter looked attractive with him. That really upsets me somewhat".
Perhaps the most ironic part of the interview, though, came when Thomas recalled conversations he had with Harry and Meghan in which they told him, "Don't talk to the press".
Markle also added that Harry was "quite easy to talk to" and that the two have had discussions about politics, including a conversation in which Markle complained about President Donald Trump shortly after the USA election. Ahead of the vote, she reportedly told a political leader during a lunch at Windsor Castle that she thought Europe was going in the wrong direction, the Daily Mail said. I realize it was a serious mistake, but it's hard to take it back. "I sort of disagreed with that".
Markle said: "It was just a loose conversation about something we have to try".
He added that Prince Harry sounded "open to the experiment" of Brexit. "I have always cared for my father and hope he can be given the space he needs to focus on his health", the statement said at the time.