Cooper Flagg, the Dallas Mavericks rookie, has confirmed his relationship with Arianna Roberson, a fellow Duke basketball player. Their romance, which had been the subject of speculation for months, was made public through social media posts. Flagg, who recently won the NBA Rookie of the Year award, and Roberson, a five-star recruit and McDonald's All-American, both joined Duke in the 2024-25 season. Their paths diverged initially, with Flagg rising to fame after winning the Naismith Player of the Year award, while Roberson faced a setback due to a knee injury. The couple's connection became evident when Roberson attended Flagg's celebrations and appeared courtside during games. The confirmation of their relationship came when Roberson shared a vacation video on TikTok, followed by Flagg posting a kiss on Instagram. Their decision to keep their relationship private until now has allowed them to focus on their basketball careers, making fans even more invested in their journey as they both strive for success in the sport.