Nick Kyrgios has hinted he will soon marry girlfriend, Costeen Hatzi. 

The tennis star, 27, made a telling comment when Costeen posed in a number of glamorous selfies with a small child. 

Costeen looked sensational in the photos with her congratulating friends on their wedding, writing: 'S&K wedding'. 

Despite Nick and Costeen not yet announcing an engagement, Nick took to the comments section to write 'our wedding soon.' 

A number of the couple's fans went wild with one fan writing: 'Awwwwww you guys.' 

While another added: 'dude you need to propose to her first.'  

Nick has certainly not been shy about popping the question to Costeen, with him hinting multiple times. 

Nick posted a sweet photo of the pair leaning into one another in September and wrote: 'Dear Coz, what a journey we have been on already.' 

'My life has honestly never been the same since I've met you. You continue to make me smile and be everything I need in tough moments.

'There will always be struggle in life and I only ever want to ride the ups and downs with you.

'We explore the world and continue to experience all the craziness out there, but this is just a small reminder that I love you and you are my best friend.'  

The lovebirds have been dating for about nine months after confirming their romance in December last year.

In July, Nick announced during an Instagram Q&A he and the tennis WAG, 22, will be trying for their first baby in 2023. 

Engagement rumours circulated about the lovebirds in May after another Q&A showed Nick hugging the interior designer, 22, with the caption, 'Very soon,' alongside heart and ring emojis.

However, Nick's management soon denied the pair - who became an item after he split with long-time girlfriend Chiara Passari - were engaged.