The 48-year-old confirmed the news through an Instagram post on Friday morning, where she thanked her fans for their “love and support” through this recent chapter of her life.
She wrote: “Thank you now for your love and understanding with the news that Josh and I have decided to go our separate ways.”
“We wish only the best for each other as we venture towards new horizons,” she added.
The post was accompanied with a photo of the sunset and she finished off the caption with the hashtag #thesunalwaysrises.
Minogue had met Sasse in November 2014 and they announced their engagement in February last year. According to The Sun, Minogue has broken off the engagement over suspicions that the 29-year-old actor has cheated on her.