In the whirlwind world of tennis and social media, a storm has been brewing around Australian star Nick Kyrgios and his longtime partner, influencer Costeen Hatzi. The couple, who have been a fixture in the spotlight for over three years, are now at the center of swirling breakup rumors, sparked by a series of enigmatic posts from Hatzi that have set the internet ablaze. As speculation mounts, Kyrgios has stepped into the fray, responding in his own cryptic way, leaving fans and followers piecing together the puzzle of what might be the end of one of tennis’s most high-profile romances.
The drama kicked off over the weekend of March 29-30, 2025, when eagle-eyed fans noticed subtle but telling changes on the couple’s social media profiles. Gone were the mutual initials that once adorned their Instagram bios—a quiet erasure that spoke volumes. Hatzi, a 24-year-old Sydney-based influencer known for her chic style and psychology background, had recently returned to Australia from the United States, where Kyrgios is currently training for a tennis comeback. The physical distance between them only fueled the whispers, but it was Hatzi’s next move that turned the rumors into a full-blown frenzy.
On March 30, Hatzi took to TikTok with a video that sent shockwaves through her 178,000-strong follower base. Sitting in a parked car alongside her friend Golda Mansour, she mouthed the words to a now-iconic audio clip: “Part 37, Who The F— Did I Marry? So at this point in time, I have filed for divorce.” The audio, borrowed from a viral series about a woman uncovering her ex-husband’s deceptions, was paired with a caption that read, “You don’t see your friend in a while and you have to update her on your chaotic life.” The post dripped with ambiguity—was it a playful jab or a thinly veiled confession? Fans leaned toward the latter, especially when Mansour chimed in with “bare minimum,” a phrase that many interpreted as a dig at Kyrgios’s efforts in the relationship.
Hatzi, perhaps sensing the wildfire she’d ignited, later added a lighthearted disclaimer: “It’s a joke guys lol.” Yet the damage was done. The internet erupted with speculation, with some followers probing deeper. One commenter asked, “Do you have a broken heart?” to which Hatzi replied with a coy, “Hahahaha.” Her nonchalance did little to quell the chatter, especially given the couple’s history of weathering storms together—both on and off the court.
Kyrgios, never one to shy away from a spotlight, didn’t let the moment pass quietly. The 29-year-old, whose fiery talent and Greek-Australian roots have made him a fan favorite, fired back with an Instagram Story that added fuel to the fire. Posting a sleek image of a luxury sports car, he captioned it, “Fact of the day… don’t believe everything you read. Stay in your lane.” The message was classic Kyrgios—bold, defiant, and just vague enough to keep everyone guessing. Was it a direct response to Hatzi’s post, a swipe at the rumor mill, or both? The tennis star, currently in the U.S. chasing his first tour-level wins since 2022, left the interpretation wide open.
Their story began in late 2021 with an unlikely spark: a message from Kyrgios about a mirror Hatzi was selling on Instagram. What started as a casual exchange blossomed into a romance that went public in January 2022. Hatzi once called it “love at first sight,” and the pair quickly became inseparable, moving into a Sydney apartment together by May of that year. She traded her nascent career at a car dealership for a life on the tennis circuit, cheering Kyrgios on from Wimbledon to the U.S. Open. “I’ve never really watched a tennis game in my life,” she admitted early on, but she soon embraced the sport—and the lifestyle—with gusto.
For years, Hatzi was Kyrgios’s rock. She stood by him through injury setbacks, including a knee surgery that sidelined him for much of 2023 and 2024, and celebrated his triumphs, like his doubles title at the 2022 Australian Open. His manager once praised her, saying she “lifts him up and gives him motivation and inspiration.” Hatzi, in turn, marveled at his drive: “I don’t think anyone is as competitive as Nick.” Their bond seemed unshakable, complete with a dachshund named Boo and talk of a future with marriage and kids—though not yet, as Hatzi noted in 2024, citing her youth and his focus on tennis.
Now, as Kyrgios battles to reclaim his spot among the elite—fresh off a win against Mackenzie McDonald at the Miami Open—these cryptic exchanges cast a shadow over their once-idyllic narrative. Lifestyle differences, insiders suggest, may have driven a wedge between them. “Nick loves to live life to the fullest,” one source hinted, while another added, “She’s ready for a different rhythm now.” Whether this is a temporary rift or a permanent split remains unclear, but for a couple who’ve thrived in the public eye, their latest moves ensure the world will keep watching—and wondering—what comes next.
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