In the world of tennis, where drama often unfolds on the court, Australian star Nick Kyrgios and his long-time partner, influencer Costeen Hatzi, have quietly closed the chapter on their high-profile romance. The couple, who captivated fans with their modern love story since late 2021, have officially parted ways, with Hatzi confirming the split in a recent public appearance. The breakup, hinted at through cryptic social media posts and subtle changes in their online presence, marks the end of a nearly four-year relationship that once seemed destined for wedding bells.
Kyrgios, 29, and Hatzi, 24, first crossed paths in a distinctly digital fairy tale. The tennis maverick, known for his fiery on-court antics, reached out to Hatzi via Instagram to inquire about a mirror she was selling. What began as a transactional exchange quickly blossomed into romance, with Hatzi later describing it as “love at first sight.” By January 2022, the couple made their relationship Instagram-official, sharing a mirror selfie captioned, “Not a bad way to start 2022.” From there, they became inseparable, with Hatzi becoming a fixture courtside at Kyrgios’ matches, from the Australian Open to Wimbledon, where she cheered him on during his 2022 final run.
Their relationship was more than just a public spectacle. Kyrgios, often labeled the “bad boy of tennis,” credited Hatzi with transforming his life both on and off the court. “None of this could have been done without her,” he said in 2022, reflecting on his career-best season, which included an Australian Open doubles title and a Wimbledon final appearance. Hatzi, a psychology graduate and budding entrepreneur with her Style Studio Dress Hire business, brought stability to Kyrgios’ tumultuous world. His manager, Daniel Horsfall, praised her influence, noting, “[Hatzi] lifts him up and gives him motivation and inspiration, and she’s just a great partner to him.”
However, whispers of trouble surfaced in March 2025, when Hatzi returned to Australia from the United States without Kyrgios. Social media sleuths noticed the couple had removed each other’s initials from their Instagram bios, a subtle but telling sign. Hatzi fueled speculation with a TikTok post, lip-syncing to a viral audio clip: “Part 37. Who the f*** did I marry? So at this point in time, I have filed for divorce.” Though she later clarified it was a joke, the post, captioned “Spilling the tea ☕️,” kept the rumor mill churning. Kyrgios, meanwhile, appeared to downplay the chatter, commenting a heart-eyes emoji on one of Hatzi’s posts and writing, “Fact of the day … don’t believe everything you read. Stay in your lane.”
The ambiguity ended when Hatzi, attending the Witchery White Shirt Campaign launch in Sydney, spoke candidly about her life post-split. “I’m still going on with work and I have a few different brands that I’m working with at the moment,” she told reporters, radiating resilience. “I’m grateful to have this life and hopefully keep on going … I think it’s always important to put yourself first and do what makes you happy.” Her words suggested a focus on personal growth, hinting at irreconcilable differences with Kyrgios, whose “party boy” lifestyle reportedly clashed with her priorities. Insiders noted that Hatzi had grown weary of Kyrgios’ ways, with one source stating, “She would have to be willing to accept how he rolls, and she won’t anymore.”
The breakup comes at a challenging time for Kyrgios, who has been battling chronic wrist and hip injuries. His return to the ATP Tour in 2025 was marred by a first-round loss at the Australian Open and a withdrawal from Indian Wells, though he found joy in a victory at the Miami Open. Hatzi was by his side through much of his recovery, supporting him during his stint as a commentator for BBC and ESPN in 2024. Their shared moments, from adopting a pet dog they called “My beautiful family” to jet-setting across the globe, painted a picture of a couple deeply in love. Yet, as Hatzi reflected in 2024, “It’s really easy to get lost and caught up in your partner’s life, especially if they’re a global athlete. It’s important for me to have my own life and my own goals, too.”
As both move forward, Hatzi continues to build her influencer empire, collaborating with brands and walking runways, while Kyrgios focuses on his tennis comeback. The end of their relationship, once celebrated for its transformative impact, leaves fans nostalgic for the days when Hatzi’s courtside presence seemed to fuel Kyrgios’ best moments. For now, the tennis star and his former muse are charting separate paths, proving that even the most iconic love stories can reach an unexpected final set.
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