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Dallas Mavericks star Cooper Flagg’s season ended last month, but that hasn’t stopped him from making big plays.
Flagg confirmed his relationship with Duke women’s basketball center Arianna Roberson on Thursday with a post on his Instagram story. Flagg posted a photo of them kissing while in Turks and Caicos, and Roberson reposted it on her Instagram story with two black heart emojis.
Roberson also posted a TikTok of the pair together during their vacation with the caption “carry on.”
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(Left) Dallas Mavericks forward Cooper Flagg (32) looks on from the bench during the second quarter against the Orlando Magic at the American Airlines Center in Dallas, Texas, April 3, 2026. (Right) Duke Blue Devils center Arianna Roberson takes part in drills during practice ahead of Sacramento Regional 2 in the 26NCAA Women’s Center of the Golden 26NC 120na tour. Sacramento, California, March 26, 2026. (Jerome Miron/Imagn Images; Ed Szczepanski/Imagn Images)
Rumors of their relationship first began when they posted photos of themselves on their own accounts at the same resort at the same time, leading fans to believe they were vacationing together. They were also spotted together at Cameron Indoor Stadium in February, taking part in Duke’s 101-64 blowout win over Syracuse.
The pair overlapped for a year at Duke in 2024-25 when they were both freshmen. Flagg declared for the NBA Draft after leading Duke to the Final Four and was eventually selected with the No. 1 overall pick in the NBA Draft.
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Duke Blue Devils center Arianna Roberson takes part in drills during practice ahead of Sacramento Regional 2 of the 2026 Women’s NCAA Tournament at Golden 1 Center in Sacramento, Calif., on March 26, 2026. (Ed Szczepanski/Imagn Images)
While the Mavericks struggled and missed the playoffs in Flagg’s rookie year, he had a lot of personal success. He beat out former Duke teammate Kon Knueppel, a forward for the Charlotte Hornets, to win NBA Rookie of the Year.
In 70 games, Flagg averaged 21 points, 6.7 rebounds, 4.5 assists and 1.2 steals per game.
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Dallas Mavericks forward Cooper Flagg dribbles during the second half of an NBA game against the Los Angeles Lakers in Dallas on April 5, 2026. (LM Otero/AP)
In 33 games, Roberson averaged 8 points per game. game on 41.6% shooting with Duke. Her older brother, Andre Roberson, played seven seasons in the NBA and spent the majority of his career with the Oklahoma City Thunder.
