The Dallas Mavericks have a new power couple in the making. Rookie sensation Cooper Flagg and Duke women's basketball forward Arianna Roberson have officially stepped into the spotlight together, confirming their relationship with a playful TikTok video posted Thursday night.

Flagg, who just wrapped up a historic rookie season averaging 21.0 points, 6.7 rebounds, and 4.5 assists per game, was named NBA Rookie of the Year. Though the Mavericks fell short of the playoffs, Flagg has kept fans buzzing this postseason—now for reasons beyond basketball.

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The video, posted on Roberson's account, shows the pair showing off their vacation outfits, a clear signal that this relationship is no longer under wraps. Both enrolled at Duke in 2024, where Flagg starred for the men's team and Roberson, a former McDonald's All-American and Nike Hoop Summit selection, played for the women's squad.

Roberson's journey at Duke has been one of resilience. After missing her entire freshman season due to injury, she returned this year to average 8.0 points and 5.7 rebounds per game. Her impact was felt most during Duke's Elite Eight run, where she posted a double-double against Baylor in the Round of 32 and nearly did the same against LSU in the Sweet 16 with nine points and 10 rebounds.

Basketball runs deep in the Roberson family. Arianna's brother, Andre Roberson, played in the NBA from 2013 to 2021, earning a spot on the All-Defensive Second Team in 2017 with the Oklahoma City Thunder. He averaged 4.5 points and 4.0 rebounds per game over his career.

This isn't the only high-profile relationship making waves in the sports world. The news comes amid a flurry of public confirmations, including another star pairing revealed at the Kentucky Derby. Meanwhile, the Duke basketball program continues to dominate headlines, with Amazon Prime Video securing an exclusive triple-header next season.

As Flagg and Roberson take their relationship public, fans of both Duke and the Mavericks are eager to see how this partnership unfolds—both on and off the court.