"The friendship between our two nations - and ourselves I might add - is unbreakable", he said.
In the video, U.S. president did not hide his actions, even appearing to take a step back to appraise the French president's 64-year-old wife.
Trump claimed the Paris accord is too lenient on leading polluters like China and India which adversely affects U.S. industry, reported France 24.
During the United States president's two-day trip to Paris, he and Macron have seemed at ease in each other's company and on good terms, with Trump saying that the bond between them was "unbreakable" and Macron referring to his counterpart as a "friend".
Macron said Washington remains Paris's strategic ally despite strong disagreement over climate change.
As often happens under this administration, the political substance was overshadowed by the antics of the US President. "And if it happens, that will be wonderful, and if it doesn't, that will be okay, too", said Trump, who has previously said he wants to renegotiate the agreement.
This leaves open the possibility of him reconsidering the decision to pull United States out of the Paris climate agreement.
Protesters angry about Mr. Trump's visit set up a symbolic "No Trump Zone" in the city as part of what activists say will be a series of anti-Trump rallies.
Trump had alleged that the Paris accord was soft on leading polluters like China and India.
It's Bastille Day in France, so what better way to celebrate 1789's violent overthrow of the monarchy than with some French house music - désolé, musique de maison - arranged for a marching band?
"And he called me, he said, would you come, it's Bastille Day - 100 years since World War 1", said Trump to reporters on Air Force One Thursday. France and the USA are among a coalition of nations fighting the extremist organisation. This year's event also coincides with the centenary of America entering World War I.
He repeated the comment to the French President - 25 years his wife's junior - before saying "Beautiful".
However, social media immediately reacted with many users denouncing Trump's comments as sexist, reports the Guardian.
Donald Trump watched us and French soldiers march together through the Paris sunshine in a double celebration Friday marking 100 years since the United States entered the First World War and France's annual Bastille Day holiday.
Trump came to France beset by allegations of Russian interference in the 2016 US election, with emails released on Tuesday suggesting his eldest son welcomed an offer of Russian help against his father's Democratic rival Hillary Clinton. She also is a grandmother to 6 grandchildren.