Nick Kyrgios and Costeen Hatzi have sparked split speculation.

Breakup rumors swirled around the Australian tennis star, 29, and his influencer girlfriend over the weekend after eagle-eyed fans noticed cryptic messaging on their respective social media accounts across Instagram and TikTok.

The first sign users picked up on was an adjustment to the pair's respective Instagram bios, reportedly removing each other's initials from their profiles where they previously were written.

On March 29, the content creator posted a cryptic message on TikTok that had fans speculating it was about her boyfriend amid breakup speculation. She filmed the video with her friend, Golda Mansour.

"Part 37. Who the f--k did I marry? So at this point in time I have filed for divorce," Hatzi lip synced in the clip. "You don't see your friends in a while and you have to update her on your chaotic life," she wrote over the video.

She captioned the post, "Spilling the tea ☕️," before quipping, "It’s a joke guys lol."

The comment section was filled with questions, asking if she and the tennis star broke up. She responded to one, which left fans wondering more.

"Do you have a broken heart," asked one user. To which Hatzi replied, "No ❤️❤️❤️."

Meanwhile, over on the tennis WAG's Instagram, she posted a carousel of glammed-up images that featured her wearing a white, strapless dress and applying lipstick in a mirror. "Touch ups," she captioned the post shared on March 31.