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It was hard to miss this love-in in the City of Love.

Outgoing first lady Jill Biden and President-elect Donald Trump displayed some rare cross-party camaraderie in Paris during the reopening of the Notre Dame Cathedral.

The interaction delighted the MAGA world and sparked a frenzy of speculation.

They two had a rare encounter in Paris on Saturday. via REUTERS

Biden and Trump shared a moment caught on camera while waiting for French first lady Brigitte Macron to take the seat that separated them during the reopening ceremony.

On Sunday, Trump seized on the frenzy and used the photo of him and Jill Biden that caused a social media stir to hawk his own cologne line. 

“A fragrance your enemies can’t resist,” the caption read for his cologne called Fight, Fight, Fight.

While it’s not clear what was said between them, internet commenters had some theories that Jill has warmed up to the incoming president.

Despite her harsh words for Trump, 78, and his scathing attacks on her husband in the past, some users theorized that she ultimately supported the president-elect during the 2024 race.

“I just want to find someone that looks at me the way Jill Biden looks at Trump,” user Drefanzor Memes posted on X.

“Jill Biden looks like she’s in love with the BOSS Trump. 100% confirmed she voted for Trump!” user AJ Huber wrote on X.

“She voted for him. It’s settled science,” Bonchie chided.

Netizens seized on a look first lady Jill Biden gave President-elect Donald Trump during the Notre Dame reopening ceremony. via REUTERS

“Haven’t seen Jill look at Joe quite like she’s looking at President Trump,” user Joanne_Lopez_Dow said.

“Mr. Steal Your Girl No — doubt she voted for him,” user Geiger Capital jabbed.

“’Thank you for voting for me,’” podcaster Alan Cornett mused about what the conversation was like between the two.

Many of those users seized on a photo in which Jill Biden appeared to look fondly at Trump.

Ashley and Jill Biden sat one seat away from President-elect Donald Trump during the ceremony. Getty Images for Notre-Dame de Paris

Shortly after President Biden dropped out of the race in July, the MAGA faithful theorized openly that the Bidens weren’t actually backing Joe’s handpicked successor, Vice President Kamala Harris.

They seized on the lame-duck president donning a Trump hat while mingling with firefighters in Shanksville, Pa., last September while marking the 23rd anniversary of the Sept. 11, 2001, terrorist attacks.

On Election Day, Jill Biden was seen wearing a bright red outfit, which further fed social media speculation.

TikTok @kelseysimmers94

Then, after the election, President Biden appeared surprisingly jubilant at the White House while acknowledging his rival’s victory.

During his visit to Paris, Trump met with French President Emmanuel Macron — offering him a “power grab” handshake. He also met with Ukrainian President Volodymyr Zelensky and the UK’s Prince William.

The trek marked his first stop overseas since winning the Nov. 5 election.