Bill NighyandAnna Wintoursparked romance rumorswhen they walked the carpet together at theMet Gala 2023on Monday, but a representative for Nighy tells PEOPLE that the pair “have simply been great friends for two decades.”

“They are not in a relationship,” the rep adds, clarifying that the pair are not romantically involved.

TheLove Actuallyactor and Wintour, also 73, were two of the firstred carpetarrivals at fashion’s biggest night in New York City. TheVogueeditor-in-chief and Nighy wereseen locking arms as they walked the red carpettogether.

Anna Wintour and Bill Nighy.Jamie McCarthy/Getty

The 2023 Met Gala Celebrating “Karl Lagerfeld: A Line Of Beauty” - Arrivals

Wintour dressed in a patterned coat worn over a floor-length silver skirt to the exclusive event Monday, while Nighy opted for a classic look for the night honoring the lateKarl Lagerfeld, in a dark-colored suit paired with a blue tie and white shirt.

The pair have been spotted spending time together on numerous occasions over the years, asThe Telegraphnoted in Dec. 2022.

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Nighy, who has also starred in movies likeAbout Time(2013) andEmma(2020), was previously in a relationship with actress Diana Quick from the 1980s until their breakup in 2008, according to the U.K.‘sThe Evening Standard. Though the pair never married, Nighy referred to Quick, 76, as his wife, and they share actor and filmmaker daughterMary Nighy.

In January, Nighy received his first career Academy Award nomination for his performance inLiving, a British drama that follows a bureaucrat in 1950s London who receives a terminal illness diagnosis.

source: people.com