The former world No13 was in an but endured a rocky time from first dating in July 2020 to its end last October.
Kyrgios also supports the in the.
He reaffirmed their relationship during the 2018 Australian Open, but they subsequently parted.
They defeated 6th seeds Tim Pütz and Michael Venus in the quarterfinals to reach the semifinals, where they will play 3rd seeds Marcel Granollers and Horacio Zeballos.
Kyrgios reached a career-high ranking of number 16 following the tournament.
Moving into 2013, he gained the number 1 junior ranking by defeating Wayne Montgomery in the Traralgon International final.