Cooper Flagg confirmed his relationship with his girlfriend, Duke Blue Devils center Arianna Roberson. On Friday, the pair shared a TikTok video of themselves on vacation together.
The video shows Roberson and Flagg holding hands and waving in different outfits. Soon after Roberson shared the video on her TikTok account, Flagg shared a picture of himself kissing Roberson on his Instagram story.
Here’s the video shared on TikTok:
Flagg and Roberson have been linked to each other since the 2024-25 season. They both arrived at Duke University at the same time. However, the start of their careers differed significantly.
Flagg led the Blue Devils in his freshman season, averaging 19.2 points, 7.5 rebounds and 4.2 assists through 37 games. Roberson, meanwhile, missed the entirety of that season with a knee injury. She made her debut for the team in 2025-26, averaging 8.0 points, 5.7 rebounds and 1.3 blocks through 33 appearances.
Rumors that they were dating emerged after Roberson was seen attending Flagg’s games at Duke while sitting close to people from his circle. The speculation only increased after she joined his parents for Flagg’s press conference after his Rookie of the Year win this season.
Flagg is not the only connection Arianna has to the NBA, being the younger sister of former Oklahoma City Thunder forward Andre Roberson. He played in the league for seven seasons, averaging 4.5 points and 4.0 rebounds in 307 games with the Thunder and the Brooklyn Nets. Known for his defense, Roberson made the All-Defensive second team in 2017.
Flagg just wrapped up his rookie year in the NBA. He averaged 21.0 points, 6.7 rebounds and 4.5 assists, shooting 46.8%. He beat out former Blue Devils teammate Kon Knueppel for the ROTY award.
Despite Flagg’s numbers, the Mavericks struggled as a team, finishing in 12th place in the Western Conference with a 26-56 record. They will head to the 2026 NBA Draft with the No. 9 pick.
“Why do y’all care so much?”: Fans react to Cooper Flagg and Arianna Roberson’s video confirming their relationship
Flagg and Roberson’s TikTok video was reposted to X by @c1oudeman, where it quickly went viral, amassing more than 2.8 million views. Fans flooded the post’s comments section.
“Why do y’all care so much post abt they personal lives lol,” one fan wrote.
“This must be a calculated move. Otherwise, what the f*** is he doing lmao,” another fan said.
“I’m more worried bout the facts she’s almost his height, Shawty is 6’4 minimum,” a fan wrote.
“Bro, they baby gon be the most athletic human we’ve ever seen,” another fan wrote.
“I am sure I am not the first one to say it, but I want dibs on the First Round draft rights on their offspring – NBA or WNBA,” one fan commented.
Flagg and Roberson have shared pictures and videos with each other, though neither has made a direct public statement confirming the relationship.
Read More: LOOK: Cooper Flagg’s Rumored GF Arianna Roberson Poses in Floral Bikini During Tropical Getaway
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