Serial Twitter flirt and rising Aussie tennis star Nick Kyrgios has been romantically linked with fellow up-and-comer Ajla Tomljanovic, on the eve of his second Wimbledon tilt.

On the red carpet for the pre-Wimbledon Women’s Tennis Association Party, Kyrgios was coy when questioned by Sky News if he’d accompanied Tomljanovic to the function.

He was then pictured with Tomljanovic’s sister at the party, who described him as “fam” (family).

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The star’s Twitter flirting and honesty about sexual activity has made his love life the subject of much speculation since he burst onto the scene with an upset victory over Rafael Nadal at last year’s Wimbledon. 

His touted flame, Tomljanovic, was born in Croatia but pledged her allegiances Down Under to represent Australia before the 2014 US Open.

The 22-year-old (ranked 63rd in the world) had her best Grand Slam result when she made the fourth round of the 2014 French Open.

With fam tonight @NickKyrgios pic.twitter.com/K26melagAD

— Hana Tomljanovic (@MamaT591) June 25, 2015

Almost there #Wtaparty @MamaT591 pic.twitter.com/Jm0mNIlVhd

— Ajla Tomljanovic (@Ajlatom) June 25, 2015

The combustible and flamboyant Kyrgios, 20, tweeted about his “crew” after the party as well, including Tomljanovic in the message. 

@MamaT591 @Madison_Keys @Ajlatom – Crew was in fine form today ✌️ — Nicholas Kyrgios (@NickKyrgios) June 24, 2015

Nothing has been confirmed or denied by either party, but evidence of romance continues to mount.

In May, a picture posted on Twitter shows Kyrgios standing court side to watch Tomljanovic in her French Open contest with Angelique Kerber.

Thought it was cool Kyrgios was courtside today cheering Tomljanovic vs Kerber #WTA #RG2015 pic.twitter.com/SDUCBPcAPQ

— Craig Ross (@ClearlyOut) May 27, 2015

We’ll have to wait and see if things develop between the youngsters.

Victoria Azarenka

Before Tomljanovic was on the scene, it was the hard-hitting forehand of Victoria Azarenka attracting the attention of Kyrgios.  His public flirting match with the Belarusian champ made headlines when the two-time Australian Open women’s singles winner fielded a “private coaching” offer from Aussie Nick.

“@vika7: How can I learn to serve as big as u @NickKyrgios ??? #NKAO2015” Private lessons of course!! — Nicholas Kyrgios (@NickKyrgios) January 24, 2015

“@NickKyrgios: “How can I learn to serve as big as u @NickKyrgios ??? #NKAO2015” Private lessons of course!! ” okay I’ll book one — victoria azarenka (@vika7) January 24, 2015

Before that exchange, there was also this blatantly gushy Twitter rally.

That Aussie accent is just sexy — victoria azarenka (@vika7) September 11, 2014

@vika7 that Belarusian accent is just as sexy

— Nicholas Kyrgios (@NickKyrgios) September 11, 2014

☺️ I reckon 🙂 did i spell that right? RT @NickKyrgios: @vika7 that Belarusian accent is just as sexy

— victoria azarenka (@vika7) September 11, 2014

Stars in his eyes

Unsurprisingly, Kyrgios couldn’t keep his thoughts to himself when spending downtime watching a film, and his appraisal of this Hollywood star made the news.

Im in love with @brianaevigan_2 – The reason I watched Step Up.

— Nicholas Kyrgios (@NickKyrgios) September 29, 2014

He even included the actor’s Twitter handle in the tweet – just to make sure she knew about it.

Briana Evigan’s performance in Step Up won over the tennis star. Photo: Getty

No abstinence when tempted

It was only a matter of time before reporters started to ask him personal questions – but it seems Kyrgios is only too happy to answer them.

He gave the following response to a question about abstaining from sex before big games. 

“I don’t abide by that rule,” he told men’s magazine GQ. “I don’t abide by that at all.

“You fly around the world doing what you love and that’s play tennis. And if you’re good enough, some of the top players have a lot of girls as well.”

While rumours of his love interests swirl, one particular comment he has served up in the past could cast doubt on the Tomljanovic theory.

“I won’t say any (names), but mate, a lot goes on. What happens on tour gets around fast, so you have to be careful,” Kyrgios told GQ.

“That’s why I don’t mess with any tennis chicks.”