Nick, 23, dated Cyrus for 18 months before splitting in 2007. He split from Miss Universe Olivia Culpo in 2015 after two years of dating, reported Us magazine.
When asked about Cyrus, Nick said, "I don't have a relationship with her now really, but that's not because we have any bad blood-we just sort of run in different circles."
He then praises her musical evolution, "It's pretty great, because I love 'Wrecking Ball' so much. I still think its one of the best pop songs of the last 10 years."
Nick revealed that he hasn't heard from Olivia in a year.
"I don't know if I'll hear from her again. I'm not sure."
When asked about his upcoming solo album "Last Year Was Complicated" which was mostly inspired by Olivia, Nick said, "I've thought a lot about whether she's heard it, and I'm sure she's heard 'Champagne Problems' at this point.