For a solid three years, you couldn't scroll through a tennis feed without seeing them. Nick Kyrgios, the tour’s resident lightning bolt, and Costeen Hatzi, the Sydney influencer who somehow managed to keep him grounded. They were the ultimate "if you know, you know" couple of the ATP circuit. From the high-stakes drama of the Netflix series Break Point to the literal front row of Wimbledon, they were inseparable.
Then, the silence hit.
If you've been wondering why those gushing Instagram tributes stopped appearing or why Costeen is suddenly posting about "new beginnings" at the 2026 Australian Open, you aren't alone. Relationships in the public eye usually end with a flashy PR statement. This one? It was a slow burn of cryptic bios and deleted initials that left fans scrambling for answers.
The Mirror That Started It All
Honestly, the way they met sounds like a plot from a low-budget rom-com. It wasn't at a VIP lounge or through a high-end dating app. Nick was scrolling through Instagram in late 2021 and saw a mirror he liked.
Costeen, who had recently graduated with a psychological science degree, was running a small interior decor business called Casa Amor. She was selling the mirror. Nick messaged her, showed up at her door to buy it, and—according to both of them—it was love at first sight.
Basically, he went for home decor and left with a girlfriend.
By January 2, 2022, they made it "Instagram official." It was a simple selfie with a caption about not a bad way to start the year. Within weeks, she was a fixture in his player box. For a guy who notoriously struggled with the lonely grind of the tennis tour, Costeen became his anchor.
✨ Don't miss: What Time Did the Cubs Game End Today? The Truth About the Off-Season
Why Everyone Thought a Wedding Was Coming
It wasn't just fans speculating. Nick himself was leaning into the hype. At one point, he jokingly (or maybe not so jokingly) commented "Our wedding soon" on a photo of them.
They moved into a sleek apartment in Sydney together. They got a dog. Costeen even started traveling full-time on the tour, which is a massive commitment. If you've ever watched Break Point, you saw the dynamic: she was the calm to his storm. While Nick was smashing rackets and arguing with umpires, Costeen was the one in the stands just... nodding. She wasn't a tennis fan before him. She admitted she’d never really watched a match in her life.
Maybe that’s why it worked for so long? She didn't see the "bad boy" of tennis; she just saw the guy who bought a mirror from her.
The Quiet Breakup of 2025
The cracks started appearing in early 2025. You know how it goes in the digital age—the first sign of trouble isn't a fight; it's an edit to a social media bio. Fans noticed that both Nick and Costeen had removed each other’s initials from their profiles.
By March and April 2025, the rumors were deafening. Costeen posted a TikTok lip-syncing to a clip about "filing for divorce" (a joke, she said, but the timing was spicy). Eventually, the news broke that they had returned home from a trip to the U.S. separately.
Nick finally broke his silence during an Instagram Q&A in June 2025. Someone asked if he’d ever talk about the split. His response was surprisingly measured for a guy known for being outspoken. "Things happen," he wrote. "I wish her nothing but the best."
🔗 Read more: Jake Ehlinger Sign: The Real Story Behind the College GameDay Controversy
Costeen later echoed that sentiment, mentioning that she entered the relationship with "pure intentions" and that it simply ran its course. No massive scandal. No cheating allegations. Just two people who spent three years in a high-pressure bubble and eventually realized they needed different things.
Life After the Split: Where Are They Now?
Fast forward to January 2026. The 2026 Australian Open is kicking off, and the vibes are very different.
Costeen Hatzi is back at Melbourne Park, but she’s there on her own terms. She’s been open about experiencing the tournament "in a new light." Instead of sitting in a tense player box for five hours, she’s collaborating with major Australian fashion and beauty brands. She’s built a following of nearly 200,000 people and runs a successful dress rental business called Style Studio. Honestly, she’s transitioned from "tennis girlfriend" to a legitimate powerhouse in the Aussie influencer scene.
As for Nick? 2026 is a massive crossroads for him.
He’s 30 now. After missing nearly two years of play due to brutal knee and wrist injuries, he’s attempting one last push. He recently told the Australian Associated Press that his knee feels like a "miracle" recovery, but he’s being realistic. He’s opted out of the singles draw for the 2026 Australian Open, choosing to focus on doubles with his best mate Thanasi Kokkinakis.
He’s also been dabbling in the commentary booth and even tried his hand at coaching French veteran Richard Gasquet. It feels like he’s preparing for a life after the baseline.
💡 You might also like: What Really Happened With Nick Chubb: The Injury, The Recovery, and The Houston Twist
The Reality of the "Bad Boy" Image
One thing that often gets brought up when discussing Nick’s relationships is his legal history. It’s important to be accurate here: back in 2023, Nick pleaded guilty to a common assault charge involving a former girlfriend, Chiara Passari, from an incident in 2021.
The court didn't record a conviction, with the magistrate labeling it a "single act of stupidity" during a heated argument where Nick tried to leave in an Uber and was being blocked. Nick has been vocal about his mental health struggles during that period—dealing with depression and substance use.
During his time with Costeen, he seemed to have moved past that dark chapter. His agent even remarked that while previous relationships might have pulled him in the wrong direction, Costeen "lifted him up." It’s a reminder that even the most "unbreakable" looking couples are dealing with layers of history and personal growth behind the scenes.
What’s Next?
If you're following this story for the gossip, the "tea" has mostly settled into a respectful lukewarm. They aren't following each other on Instagram anymore, and they’ve both moved into very different phases of their lives.
If you want to keep up with their separate journeys, here is what to look for:
- Watch the Doubles: Keep an eye on the "Special K's" (Kyrgios and Kokkinakis) at the 2026 Australian Open. This might be one of the last times we see Nick compete at a Grand Slam level.
- Follow the Business: Costeen’s Style Studio is becoming a major player in the Sydney fashion circuit. If you’re into sustainable fashion, her rental model is actually pretty innovative.
- The Commentary Shift: Nick is likely going to transition into full-time media. He’s naturally good on the mic—unfiltered, knowledgeable, and actually interesting to listen to.
Relationships end, even the ones that look perfect on a Netflix documentary. But both Nick and Costeen seem to be proving that there's a pretty successful "Act 2" waiting once the cameras stop following the couple and start following the individuals.