Charlie Sheen apparently isn’t a big fan of the concept of friendly exes.

In fact, Denise Richards revealed her ex-husband had quite the jealous side before their 2006 divorce.

During the March 25 episode of her Bravo reality show Denise Richards & Her Wild Things, the actress reconnected with former boyfriend Patrick Muldoon to costar in his new music video and she reflected on their decades-long friendship.

“Mine and Pat’s relationship romantically was years ago and it’s just a deep friendship,” Denise—who is now married to Aaron Phyphers—shared in a confessional. “I’m so grateful Aaron respects that because Charlie, he had a hard time with my relationship with Pat.”

Her friendship with the Melrose Place actor—who she briefly dated in the ’90s—was even put on pause during her and Charlie’s four-year relationship.

“I did not speak to Pat when I was married to Charlie,” the 54-year-old continued, “and it was hard because I didn’t want to lose him as a friend friend. But, towards the end of the marriage, I talked to him all the time about him.”