“Who you choose to go through this life with is probably the most important decision you make,” Kyrgios wrote on Instagram.
“I’d choose you every time …. Happy birthday to my closest friend, the person who hates me one minute and loves me the next, the best girlfriend, my biggest fan, my love, and a great partner in life.
“So happy to bring another year of life in with you! I love you.”
Hatzi commented, “I love you so much 💕💕💕 I’m so lucky to have you. 🥺🖤 to many more birthdays together xx.”
Kyrgios turned 28 in April, when Hatzi shared an equally gushing post on her social media, saying: “Happy 28th birthday to my best friend.
“I can’t thank you enough for everything you have taught me. You are one in a million and I’m so lucky I get to spend everyday with you. I love you beyond words and love all the memories we have created together.
“To many more birthdays, enjoy your special day.”
The pair’s high-profile relationship has continued to gain attention since they first announced they were dating in December 2021.
The two stepped out together for the first time in December 2021, attending an NBL game (Australia's NBA equivalent) in Sydney. On December 4, 2022, Kyrgios posted, "a year since we met and everything became better." Reportedly, Kyrgios slid into Hatzi's DMs.
Kyrgios first appeared on Hatzi's Instagram on January 2, 2022—an Instagram official with a mirror selfie and the caption reading, "Not a bad way to start 2022 🤎"