Donald Trump has said he is not aware of any invitation for him to attend Prince Harry's wedding to Meghan Markle.
But Ms Markle has been a vocal critic of former reality star Mr Trump, backing his rival Hillary Clinton and suggesting before the 2016 election she would leave the US if he won.
Asked if he would like to go to the royal wedding in May at Windsor Castle's St George's Chapel, Mr Trump simply said: "I want them to be happy. I really want them to be happy.
"They look like a lovely couple."
When Morgan pointed out she had labelled the billionaire "divisive" and a "misogynist", he said: "Well, I still hope they're happy."
Morgan also pressed the president on his social media habit, confirming he often tweets himself but will delegate if he is busy.
He said: "Well, perhaps sometimes in bed, and perhaps sometimes at breakfast, or lunch, or whatever.
"But generally speaking, during the early morning or during the evening, I can do that.
"But if I'm very busy during the day ... and I'll sometimes just dictate out something really quickly, and I'll give it to one of my people to put it on."
President Trump - The Piers Morgan Interview airs tonight at 10pm on ITV