Arianna Roberson and Dallas Mavericks forward Cooper Flagg confirmed they are a couple after Roberson posted a TikTok showing the two together on a trip to Turks and Caicos, the report says.
The clip included multiple coordinated outfits and several images in which the pair were holding hands, per the report. Flagg also shared a photo of the two kissing to his Instagram story with two black heart emojis, and Roberson reshared that same post on her social channel, the report adds.
The report notes Roberson attended the news conference when Flagg was presented with the Rookie of the Year award last month, sitting in the field of reporters alongside Flagg’s parents, Kelly and Ralph. Those appearances were cited as public moments connecting the two before the social-media confirmation.
Both players have ties to Duke, the report says. Roberson recently completed her freshman season and averaged 8.0 points and 5.7 rebounds in the 2025-26 regular season; the report adds that the pair did not play at Duke at the same time. Roberson is also identified in the report as the younger sister of former NBA forward Andre Roberson.
Flagg’s offseason has drawn attention beyond the vacation, per the report. Before the Turks and Caicos posts, he served as the honorary pace car driver for the Würth 400 at Texas Motor Speedway. The report also notes Flagg was the No. 1 pick in the 2025 NBA draft and averaged 21.0 points, 6.7 rebounds and 4.5 assists in his rookie campaign.
