The 48-year-old "Spinning Around" hitmaker is said to have settled down in a serious relationship, reported Female First.
"It's all starting to come together for Kylie, she's in such a good place, a source said.
Revealing Minogue and Sasse share a strong bond, the source added, "She never really made a big deal about motherhood when she was single but now she's in a very serious, long-term relationship, it's on the agenda. Her family and friends are just as excited for her."
It was previously revealed that "Joshua has been telling his friends in Greece about their plans to marry in Italy."