Despite meeting in 2022, we don't know exactly when the two began dating as both women didn't comment on their relationship until more recently.
Eagle-eyed fans did spot the couple celebrating the holiday season together in December 2022, thanks to matching Instagram backgrounds.
"London suits ya," Mackenzie commented on Kristy's post at the time, with fans hoping they were an item.
In February 2023, Mackenzie shared the first photo of Kristy to her account, with the Scottish soccer player spotted in a carousel of photos from London.
Kristy commented "favourite person."
In March 2023 the teammates confirmed their relationship, with Mackenzie sharing a selfie of them hugging.
Following their "soft launch" - as teammate Emily Van Egmond wrote - the pair began appearing on each other's social media pages more frequently, before heading to Greece together in June for a getaway before the World Cup.
As the World Cup kicked off in July, Kirsty was every part the supportive girlfriend as Mackenzie took the field for Australia.
Sharing a photo of Mackenzie on the pitch, Kirsty wrote: "Beyond proud of you! Nothing more special than watching you play on the world stage and live your dream. No one deserves these moments more and there’s so much more to come."
In between the World Cup and their return to the Women's Super League in the UK, the couple managed to enjoy some well earned rest with a vacation in Portugal in September.
"Quick little recharge in Vilamoura," Mackenzie wrote on Instagram.
Now, Kirsty has appeared hand-in-hand with Mackenzie at the The Best FIFA Football Awards held in January 2024.
At the event, Mackenzie was named as one of the finalists for Best Keeper, named alongside Spain's Cata Coll and England's Mary Earps (who won).
"An honour to be part of such a special night and to be nominated amongst FIFAs best. Big congratulations to everyone involved!" Mackenzie caption an Instagram post.
"Proud of you," Kirsty commented.
So cute! Get to know more about the Matildas players and their lives off the field in the documentary series on Disney Plus.
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