Mary-Kate Olsen and Sean Avery spark dating rumors after reuniting in the Hamptons over Memorial Day weekend

This might be a case for the Olsen and Olsen Mystery Agency.

Mary-Kate Olsen and Sean Avery sparked dating rumors after reuniting in the Hamptons over Memorial Day weekend.

The actress-turned-fashion designer and the retired hockey player were photographed stopping by her new The Row store in Amagansett.

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Olsen, 37, rocked her go-to oversized clothing, which she wore in her signature layered style. Pairing a caramel-colored jacket atop a long red coat and dark pants, she accessorized her ensemble with scarves, a beanie and sunglasses.

Meanwhile, Avery, 44, sported gray sweatpants and a black hoodie, which he donned over a white T-shirt. He completed his look with sneakers, a backward baseball cap, shades, a cup of coffee and a cigarette.

The pair was later seen hanging out with their mutual friend, Bravo honcho Andy Cohen, who was dressed casually.

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Reps for Olsen and Avery, who were briefly linked in 2007 and have remained friends over the years, did not immediately respond to Page Six’s requests for comment.

The sighting comes three and a half years after the notoriously private “Full House” star finalized her divorce from French banker Olivier Sarkozy.

The exes were married from November 2015 until she filed for divorce in April 2020. The duo settled their split in January 2021.

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In March, Sarkozy, 55, was snapped enjoying a lunch date with “Real Housewives of New York City” alum Luann de Lesseps.

The financier and the reality star dined at NYC’s Le Bilboquet for nearly two hours before leaving the restaurant arm in arm.

However, by April, their romance had fizzled.

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Meanwhile, Avery’s estranged wife, Hilary Rhoda, filed for divorce in July 2022 after seven years of marriage. They said “I do” in October 2015.

Avery and Rhoda, 37, welcomed a son, Nash, in July 2020. In her divorce Petition, the brunette beauty asked for joint legal and sole physical custody of their son.

She went on to accuse Avery of both domestic and child abuse and was granted an order of protection, which is still in effect.

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Rhoda’s mother was previously granted a temporary restraining order against Avery for harassment.

During and after his hockey career, Avery — whom Page Six was told has a hot temper and is unable to get along with others — has been involved in numerous controversies.

The ex-NHL star was accused of bullying people both on and off the ice, and he was penalized and traded repeatedly because of his unsportsmanlike behavior.

In 2014, Avery joined “Dancing With the Stars.” After he was ousted in the second elimination during a two-part season premiere, he blamed producers for forcing him off after he had a heated conversation with one of them.

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That same year, he abruptly quit the off-Broadway play “Negative Is Positive” just days before opening night after he got into a spat with a member of the crew.

In June 2023, the former New York Raiders player was convicted of attempted criminal mischief for ramming his scooter into a minivan that was blocking a bike lane. At the time, he was using his Instagram account, @officer_avery, to try to keep the Big Apple’s bike lanes clear of obstructions.

The Canada native has dabbled in acting, modeling, fashion, advertising, real estate and restaurants. He published a memoir in October 2017 and has hosted his own podcast since December 2019.