Morgan, an uncritical admirer of Trump whom he has interviewed on 35 occasions over the past 12 years, talked to the President for half an hour while Air Force One was stationary on the ground at Stansted Airport prior to its departure for Prestwick in Scotland on Friday.
The prime minister revealed the juicy tidbit days after Trump raised eyebrows in the United Kingdom when a recording emerged of him saying that May had ignored his advice, and in doing so put any trade deal with the USA under threat.
May has previously said that she does not believe her Brexit plans should rule out a trade deal with the United States.
May's "business-friendly" Brexit plan would keep Britain in a free trade zone for goods with the European Union but mean it had to accept some European Union rules.
May hit back at those claims, telling Marr: "Let me very clear that no department was cut out of these discussions". "Sue the European Union, not go into negotiations, sue them".
"That is a lovely woman". "I know them all and I don't see anybody".
"And the only reason that the Government has accepted these amendments is because it is frightened of somewhere in the region of 40 Members of Parliament - the hard, no deal Brexiteers, who should have been seen off a long time ago and should be seen off".
UK PM May says Donald Trump told her to sue the EU over Brexit
92-year-old queen, Trump was quoted as saying: "She is an incredible woman, she is so sharp, she is so lovely, when I say handsome - inside and out".
Russia's President Vladimir Putin talks to U.S. President Donald Trump during their bilateral meeting at the G20 summit in Hamburg, Germany, July 7, 2017. "But in a trade sense, they've really taken advantage of us and many of those countries are in North Atlantic Treaty Organisation and they weren't paying their bills". We met, but also watching the guard, hearing the sounds, being in that place, that very special place. I'm not talking about 34, I'm talking about 34 additional. Then you're stuck, '"she added". But for Russian Federation and the United States, and frankly the UK and other places, to get along with Russian Federation and China and all of these other places....
As well as Good Morning Britain, Piers has hosted Piers Morgan's Life Stories. "That's a really good thing".
President Donald Trump told Good Morning Britain viewers he was certain there was a good deal to be done between the U.S. and the United Kingdom. We're going to get it.
"We agreed we need to bring Baby Trump to Bedminster", the fundraising page says, referring to the location of the Trump National Golf Club, where the president and his family often spend weekends in the summer.
He replied: "Well, she feels she's going to be able to make a deal and yeah". If 48 letters were received it would trigger a vote on whether she should be replaced - but reports suggested the rebels would fail to get enough support.
Theresa May bows to pressure from hardline Brexiteers
Mrs May faced a potential revolt on the Taxation (Cross-border Trade) Bill, often referred to as the Customs Bill. Barnier has warned that it will be hard to reach a conclusion in the negotiations by the October target.