Nick Kyrgios appears to confirm engagement to girlfriend Costeen Hatzi after just five months as she flaunts ring

NICK KYRGIOS' girlfriend of five months flaunted a ring as the tennis ace appeared to confirm their engagement.

The controversial Australian, 26, went public with Costeen Hatzi in December after his break-up with Chiara Passari.

And they sparked rumours of a proposal in Miami this week.

Costeen, 21, was spotted wearing a band on her ring finger in a photo cuddled up in a car on her Instagram story.

Kyrgios shared the pic on his own and wrote: "My babe. We had a great week. We move forward together."

And he completed the message with a diamond ring emoji - although his manager has denied the couple are engaged.

The world No102 also commented on one of his partner's posts: "I love you so much.

"I can’t wait for everything with you in the future - the most amazing human. Let’s keep the energy going."

Kyrgios and Costeen have been inseparable since he sent her a direct message on Instagram to buy a mirror from her business account.

They said it was "love at first sight".

Costeen was an ever-present in his player's box for the Australian Open doubles triumph as well as his Covid isolation prior to the tournament.

She has been in America in recent weeks for the Indian Wells and Miami Opens.

Speaking to the Today show, Kyrgios said his girlfriend - who was warned of his past by ex Chiara - makes him "really happy".

The former No13 said: "It's unbelievable. Honestly. It's such a vibe. It's good energy.

"She makes me really, really happy. The vibes are always good there."

He also hinted he wants to marry her and start a family in the conversation with host Karl Stefanovic but lovingly said Costeen was not ready to discuss future plans publicly yet - before adding he's "not going anywhere yet".

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As well as taking her on his travels to tennis tournaments around the globe, Kyrgios has also treated Costeen to a number of luxury gifts.

Those include a £1,600 pink lambskin Balenciaga handbag, a pair of £765 Bottega Veneta orange pumps, a £2,850 Dior Saddle Bag and a £9,000 Cartier Love bracelet.

However, Kyrgios' exits from the two Masters 1000 events in the USA - nicknamed the 'Sunshine Double' - have sparked further outrage.

He had seemed to put his abhorrent behaviour behind him but then spiralled into another meltdown involving Ben Stiller at Indian Wells and then again in Miami.

When the chair umpire's walkie-talkie went off mid-point against Jannik Sinner, the Canberra star exploded in fury and was later docked a point for his comments and then a whole game for smashing his racket up.

Fuming Kyrgios tweeted: "‘You could do the job of the umpire’ - what was said to my best friend that got me ‘unsportsmanlike code violation’ at 5-3 in the first set tie break.

"With 100 of thousands of dollars on the line that was the decision he made because the umpire's ‘feelings got hurt'. GET NEW PEOPLE.

"Don’t get it twisted. I got mad respect for @janniksin - he is one of my favourite players and he was TOO GOOD.

"I am aiming all of this at an umpire who clearly ISN'T GOOD ENOUGH to be doing these matches.

"Nothing but a slap on the wrist for him right? What a joke."