Nick Kyrgios’ partner left speechless as Karl loses it over cheeky question

Karl Stefanovic couldn’t believe Nick Kyrgios’ response when he cheekily asked about the tennis star’s future with girlfriend Costeen Hatzi.

Karl Stefanovic cracks up with Nick Kyrgios. Photo: Channel 9, Costeen Hatzi, Instagram.

Karl Stefanovic was blown away when Nick Kyrgios cheekily suggested he and girlfriend Costeen Hatzi will have kids.

The tennis star opened up to the breakfast TV host when the three of them met up on a tennis court in Sydney before Kyrgios flew to Los Angeles to compete at the Indian Wells ATP Tour event.

Kyrgios has repeatedly spoken in public about how he has fallen for Hatzi this summer, even leading to rumours last month he is considering moving to Sydney permanently to be closer to her.

The 26-year-old also appeared to offer Hatzi the opportunity to travel the world with him this year as part of his travels on the ATP Tour.

Karl Stefanovic can't believe Nick Kyrgios brought up children. Photo: Channel 9.

He still looked completely head over heels as Stefanovic asked about their futures together.

“None of it would have happened without her to be honest,” he said of his run through to win the Australian Open doubles crown with partner Thanasi Kokkinakis.

Stefanovic then left Hatzi speechless as he asked the pair some very personal questions.

Hatzi replied “yes” when asked if Kyrgios was her “first tennis player” and also responded “yes” when asked if he would be her “last tennis player”.

The cheeky question got a giggle out of Kyrgios, who light-heartedly said: “Until the little ones come”.

Who is Costeen Hatzi, Nick Kyrgios’ new girlfriend

The suggestion about the couple having children left Karl saying “Whoa”.

A clearly speechless Hatzi asked, “What?” as the other two giggled away.

Stefanovic asked: “Do you guys talk futures. What does the future hold for you lovebirds?”

The pair had slightly different responses to the prickly question.

“I’ll let you answer that,” Hatzi said to Kyrgios.

The tennis star responded: “She doesn’t want to talk about it yet, but I’m not going anywhere anytime soon.”

Kyrgios’ affections didn’t stop him selling Hatzi out to dry when he said his partner didn’t understand how tennis’ complex scoring system works.

Who is Costeen Hatzi, Nick Kyrgios’ new girlfriend

Karl Stefanovic hangs out with Nick Kyrgios and Costeen Hatzi. Photo: Channel 9.

The couple went Instagram official in December.

Just one month after the home decor blogger and tennis player went public with their relationship, the fashion influencer’s following skyrocketed from 20,000 to more than 50,000 followers on Instagram.

The former Canberra-based world No. 13 recently told Stellar magazine his relationship with Costeen is his “easiest” one yet.

“Relationships are easy when both people are invested. It’s hard to move a couch on your own,” he said.

Nick — who raced to be with Costeen in Sydney following his Australian Open men’s doubles victory in Melbourne — described past relationships as “brutal” when you’re far away for so long.

“The luxury I have now in my career is that I’m able to provide for the person and if they want to travel with me they can,” he told Stellar.

There may be much more than travel on the horizon for the couple.