Kyrgios' girlfriend writes emotional message on the Australian's 27th birthday

Australian tennis star Nick Kyrgios turned 27 on April 27th, and his girlfriend Costeen Hatzi took to social media to pen a heartwarming message to the former World No.13.

Costeen has been spotted with Kyrgios several times on tour, as the pair have been dating for a while now. On his 27th birthday, she posted a message for Kyrgios on Instagram, expressing her love for the tennis star.

"Happy birthday to the most incredible human I have ever met. I am so lucky to have you & forever grateful for everything you have done for me. Your selflessness & care is unmatched. I can’t wait to do life with you & travel the world together, I love you today & forever… @k1ngkyrg1os my squish," wrote Costeen.

This prompted a response from Kyrgios, who replied to the post with "This is the nicest message I’ve ever received… I can’t wait to life with you as well my beautiful… poooot…”

Kyrgios is known to dislike the clay surface, but will be competing at the French Open after almost four years. The Cranberra native stated he changed his mind about playing at Roland Garros because Costeen wanted to see Paris.