​​Who Is Nick Kyrgios' Girlfriend? All About Costeen Hatzi

Nick Kyrgios and Costeen Hatzi began dating in late 2021

Professional tennis player Nick Kyrgios has been dating his girlfriend, Costeen Hatzi, since December 2021.

The athlete, known for his dramatic on-court antics, is one of the stars of Netflix's tennis docuseries, Break Point, which documents his 2022 tennis season and includes a look at the early days of his relationship with Hatzi.

During a confessional, Hatzi, who is a social media influencer, admitted she wasn't a tennis fan before meeting Kyrgios. "I never really watched a tennis game in my life, so yeah, this is all new for me," she said before defending her boyfriend's "bad boy" reputation. "He's not as crazy as everyone thinks."

So, who is Nick Kyrgios' girlfriend? Here's everything to know about Costeen Hatzi and her relationship with the tennis player.

She lives in Australia

Hatzi lives in Sydney, Australia with Kyrgios. She graduated in May 2021 from Australian Catholic University with a bachelor of psychological sciences. "No idea how we got through it but we did - Here's to the next chapter," she wrote on Instagram at the time.

In 2022, she and Kyrgios moved into an apartment together in Sydney. Hatzi frequently posts videos of their living space — including their renovations and interior decorations.

She says meeting Kyrgios was love at first sight

In a January 2023 ESPN profile of Kyrgios, Hatzi recounted how the two first met: In late 2021, Hatzi was selling a mirror on Instagram, and Kyrgios reached out while looking for one to purchase. They began dating soon after he showed up at her door to buy the mirror, and Hatzi told the outlet it was love at first sight.

Despite Hatzi's limited knowledge of tennis, Kyrgios' manager Daniel Horsfall told ESPN that her presence on tour had a positive impact on his game.

"I've seen him in previous relationships, and they perhaps were taking him in the other direction," Duguid said. "[Hatzi] lifts him up and gives him motivation and inspiration, and she's just a great partner to him."

The tennis pro has also praised Hatzi's support, telling reporters at the Citi Open in Washington, D.C. that "just being at peace" with life helps his game. "You know, I'm fortunate enough to be in a really healthy relationship that's loving, she's supports me, and we just have fun," Kyrgios said of his girlfriend.

She went Instagram official with Kyrgios in 2022

Hatzi and Kyrgios were linked in late 2021, but the two waited until Jan. 2, 2022, to make it Instagram official — doing so in a selfie captioned, "Not a bad way to start 2022." Two days after, she posted a massive bouquet of roses and tagged Kyrgios in the photo.

Less than a year later, Hatzi celebrated the couple's one-year anniversary with a sweet tribute. "One year with my human 🫶🏽 The best year of my life. I love you✨💛," she captioned a photo of her and Kyrgios in December. The tennis player followed up with a post of his own, writing, "a year since we met and everything became better ✨," next to a series of photos of Hatzi.

She's supportive of Kyrgios' career

Hatzi often travels to support Kyrgios at his matches and documents those trips on Instagram. When he won the Australian doubles title she posted a video of them kissing on the court, captioning it, "I love you so much & I am extremely proud of you. What an achievement, there's no one else more deserving than you."

Before Kyrgios' competed in the Wimbledon finals in 2022 — after receiving a bye to the final round— Hatzi posted a tribute on Instagram, captioning the post, "The big day. Words cannot explain how proud I am of you. You are supported by so many and you never fail to show how talented, entertaining and resilient you are. Finals at Wimbledon, that is a huge achievement in itself. Your hard work and dedication is paying off. I am so lucky to be on this journey with you 🤍 Let's do this !!!!!!"

Kyrgios ultimately lost that final to Novak Djokovic, but not without some characteristic Kyrgios drama; at one point he complained to the officials about the rowdy fans, even accusing one of being "drunk out of her mind."

She inspired him to return to the French Open

After branding the French Open the "worst Grand Slam" in 2021 after criticizing it for years, Kyrgios announced in December 2022 that he will play Roland-Garros in 2023 after a six-year absence. His reasoning? "My girlfriend wants to know Paris," he told reporters at the Diriyah Tennis Cup, per Euro Sport.

While Kyrgios admitted he "would have preferred to stay at home," he said Hatzi's desire to travel to the city inspired him to play in the tournament — and win.

"I know I can do great results on clay," he said. "I beat Roger [Federer], [Stan] Wawrinka, I played a final in Estoril … My girl wants to get to know the city so I will have to go this year."

She and Kyrgios sparked engagement rumors

Kyrgios and Hatzi have fueled engagement rumors with their social media posts on a number of occasions. On his birthday in April 2021, Kyrgios posted an Instagram story of the couple with a ring emoji, per the New York Post.

One month later, Kyrgios declined to comment on the speculation, telling an interviewer he'd like to "keep that quite private" when asked if the couple was engaged. He did, however, tell The Daily Telegraph that same month that Hatzi was "the one."

"She is definitely the one, I am in love with her and she is an amazing person and an amazing support for me," he said, per the Daily Mail. "She is my best friend literally. We go through ups and downs together but I love her to bits."

In January 2023, the couple sparked rumors again after Hatzi shared a photo of her attending a wedding, on which Kyrgios commented, "Our wedding soon."

During an Instagram Q&A, Kyrgios also hinted that the pair hopes to start a family. When asked about his "end goal" by a fan, he responded with a snap of him and Hatzi. "I want a beautiful relationship with this one. A big family. A successful tennis career that is able to look after my family, and give my kids opportunity and freedom. Lastly, to inspire millions of kids to believe," he wrote, via ESPN.

On April 20, 2023, Hatzi appeared on the Australian talk show The Morning Show, where she denied engagement rumors. "I mean, if it happens, it happens, if it doesn't, it doesn't," she said of a potential proposal. "I'm just going with the flow and we're happy and healthy and, yeah, that's all that matters."

She says Kyrgios is "not as crazy as everyone thinks"

Kyrgios is well-known for his infamous on-court behavior, previously making headlines after spitting on a fan at Wimbledon and smashing his racket during the Australian Open, among other transgressions.

Hatzi spoke about Kyrgios' on-court behavior in Break Point, telling the cameras Kyrgios is "not as crazy as everyone thinks."

However, the series did not address the charge of common assault Kyrgios is facing, stemming from an alleged incident with a former girlfriend in 2021.

After the allegations came to light in July 2022 during Wimbledon, Kyrgios told reporters it was hard to "focus," though he wouldn't comment further. "Obviously I have a lot of thoughts, a lot of things I want to say, kind of my side about it. Obviously I've been advised by my lawyers that I'm unable to say anything at this time," he said, according to The Guardian.

On Feb. 3, 2023, Kyrgios went to court in Australia and plead guilty to assaulting ex-Chiara Passari. However, Magistrate Beth Campbell chose not to record a conviction, stating that the tennis star had no criminal record and that the incident was not premeditated.

"I respect today's ruling and I'm grateful to the court for dismissing the charges without conviction," Kyrgios later wrote on Instagram. "I was not in a good place when this happened and I reacted to a difficult situation in a way I deeply regret."

She runs her own business

In 2023, Hatzi launched Style Studio, which offers luxury clothing items for rent.

"Girls nowadays only wear a dress once, especially if you're going to an event," she said during an interview on an Australian talk show. "It's good. It works for everyone."

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