The Way They Were: Trump and Romney in 2012

PHOTO: Republican presidential candidate Mitt Romney, center, shakes hands with Donald Trump after Trump endorsed Romneys presidential bid Feb. 2, 2012, at the Trump International Hotel in Las Vegas. Romneys wife, Ann is at left.PlayUIG via Getty Images
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Even though Mitt Romney is expected to call Donald Trump a "phony" later today in a Utah speech, the two men were fawning all over one another just a few years ago.

The former Massachusetts governor and the 2016 Republican presidential front-runner have gone from laying out compliments to slinging criticisms now that the tables have turned.

What Trump Said Back Then

Trump, back when he was just a real estate mogul and reality-TV star without adding candidate to his list of titles, endorsed GOP nominee Romney for the 2012 election and praised his business savvy, calling it an "honor" to endorse him for president.

"Mitt is tough, he is smart, he is sharp, he is not going to allow bad things to continue to happen to this country we all love. So Governor Romney, go out and get 'em!" Trump said.

Now, Trump has turned to Twitter to slam Romney.

How Romney's Reaction Has Changed

For Romney's part, an early preview of the remarks he is set to give in a speech today shows that he is planning to call Trump "a phony, a fraud."

"His promises are as worthless as a degree from Trump University. He's playing the American public for suckers: He gets a free ride to the White House and all we get is a lousy hat," Romney is expected to say.

PHOTO: Republican presidential candidate Donald Trump speaks during a rally aboard the Battleship USS Iowa in San Pedro, California, Sept. 15, 2015. Patrick T. Fallon/Bloomberg via Getty Images
Republican presidential candidate Donald Trump speaks during a rally aboard the Battleship USS Iowa in San Pedro, California, Sept. 15, 2015.

That strikes a clear contrast to the pleasantries that Romney shared when the billionaire endorsed him four years ago, calling Trump's support "a delight."

"Donald Trump has shown an extraordinary ability to show how our economy works. To create jobs for the American people. He has done it here in Nevada, he has done it across the country. He understands that our economy is facing threats from abroad," Romney said during the 2012 endorsement.

While the full extent of Romney's speech won't be revealed until he addresses the Hinckley Institute of Politics at the University of Utah at 9:30 a.m. local time, Romney's former running mate weighed in on the possible reason behind Romney's speech.

"He's very worried about the future of our party and country," House Speaker Paul Ryan said in an appearance on “Fox and Friends” today, noting that he and Romney are "very close friends."