Dallas Mavericks rookie sensation Cooper Flagg and Duke women's basketball standout Arianna Roberson have officially confirmed their relationship through social media posts shared during their vacation in Turks and Caicos. The confirmation comes after weeks of speculation that began when Roberson was spotted alongside Flagg's family at his Rookie of the Year press conference in April.
In a TikTok posted to her account on Thursday, May 14, Roberson, 20, and Flagg, 19, hold hands and embrace in a compilation of clips from their tropical vacation in the the Turks and Caicos Islands. An hour later, Flagg added to the buzzy relationship news with a photo of the two sharing a kiss alone in a mirror, which he posted on his Instagram Stories.
From Duke Connection to Public Romance
The relationship between Flagg and Roberson makes perfect sense given their shared Duke University connection. Roberson overlapped with Flagg for a year at the school when they were freshmen in the 2024-25 season. While Flagg spent just one dominant year at Duke before being selected as the No. 1 overall pick in the 2025 NBA Draft, Roberson continues to make her mark with the Blue Devils women's basketball program.
Rumors linking the Mavericks rookie and Duke women's basketball standout Arianna Roberson first gained traction during Flagg's ROTY celebration, when Roberson was spotted sitting courtside beside his parents as he edged out teammate Kon Knueppel for the honor. The vacation photos from Turks and Caicos added fuel to the speculation before the couple decided to make their relationship official.
Cooper Flagg's Historic Rookie Season
The 19-year-old averaged 21.0 points, 6.7 rebounds, 4.5 assists, and 1.2 steals across 70 starts, winning Rookie of the Year. His individual achievements were nothing short of remarkable, as he joined Michael Jordan as the only rookies to lead their team in all four of those categories since steals were first recorded in the 1973-74 season.
One of the most memorable moments of Flagg's rookie campaign came when he made history, becoming the first teenager to score 50 points in an NBA game. Despite his individual success, Dallas finished 26-56 and missed the play-in entirely, though Flagg gave the fanbase a reason to be optimistic.
Flagg signed a four-year, $56.4 million rookie-scale deal with Dallas, with roughly $26.3 million guaranteed. His earnings extend beyond his NBA contract, as his NIL earnings reportedly approached $28 million during his year at Duke.
Arianna Roberson's Basketball Pedigree
While Roberson may be gaining attention for her relationship with Flagg, she's an accomplished athlete in her own right. She's a Duke basketball player in her own right and the sister of former NBA guard Andre Roberson. Her brother is former NBA guard Andre Roberson, who spent six of his seven years in the league with the Thunder.
Originally from San Antonio, the 6-foot-4 center averaged 8.0 points and 5.7 rebounds as a freshman this past season. Basketball excellence runs deep in the Roberson family, with Andre having established himself as one of the league's premier defenders during his time with Oklahoma City.
Roberson has also represented Team USA during the 2024 FIBA 3×3 U18 World Cup, where she helped the team to a gold medal finish. Her international experience and college success demonstrate that she's building an impressive basketball resume independent of her famous brother or her relationship with Flagg.
Looking Ahead: Balancing Love and Basketball
Both young athletes appear focused on their basketball careers while enjoying their time together. Flagg, who won Rookie of the Year in the NBA, and Roberson, a promising young player for Duke, have kept their relationship private until now, choosing to focus on their basketball careers first.
As Flagg looks toward his second NBA season, he's already identified areas for improvement. The Mavericks star has expressed his commitment to developing his offensive game, particularly his ability to create off the dribble and improve his three-point shooting. With a full offseason of training ahead, expectations will be high for the young star to build on his historic rookie campaign.
For Roberson, another season with the Duke Blue Devils awaits, where she'll continue to develop her game at the collegiate level. The couple's shared understanding of the demands of high-level basketball likely provides a strong foundation for their relationship as both pursue their respective goals on the court.
The confirmation of their relationship has been met with widespread support from fans who appreciate the Duke connection and the fact that both athletes are talented players in their own right. As they continue their basketball journeys, Flagg and Roberson have shown they're ready to share their relationship with the world while maintaining their focus on achieving greatness in their sport.
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