Their relationship has been tumultuous to say the least.
He once said he wanted to rip her hair out, while she sought a restraining order, claiming he had made death threats against her.
But Denise Richards has now compared her relationship with ex-husband Charlie Sheen to being like ‘brother and sister.’
The 40-year-old actress, who just recently returned from a trip to Mexico with the Two And A Half Men star, told Access Hollywood that she and Charlie have become ‘very good friends.’
‘It’s our ‘Modern Family,’ I suppose,” Denise explained.
‘We’ve actually become like brother and sister, we really have. We’ve become very, very good friends…. When we all spend time together, it’s great for the kids and for us too. We actually get along.’
She said that it was important for her and Charlie to get along for the sake of their two daughters Sam, four, and five-year-old Lola.
‘I think (the key is) making it about the kids. The stuff between the couple… if you’re divorced… it’s no longer about you anymore,’ she said.
‘You have to be the bigger person and make it about the kids and so that’s what we’re doing.’
After already vacationing in Mexico over Christmas, the former couple returned to the Central American country last weekend, with their two girls as well as Denise’s adopted baby girl Eloise.
Charlie and Denise were spotted on Monday looking friendly as they departed a luxury getaway in tropical Cabo San Lucas.
Charlie, 46, looked laid back in a pair of tartan shorts and open-necked shirt, topping off the look in a Blues Brothers-esque shades and trilby hat combo.
But he was outshone by his former wife of four years, who looked fetching in a pair of tight denims, white vest and red baseball cap.
The short trip came after they also took a family holiday to the same destination just weeks before around Christmas time.
During the trip the Charlie tweeted several pictures of himself, Denise and the three girls.
The troubled star released a photo of himself and his family swimming with dolphins and tweeted: ‘…just when we thought the trip couldn’t get any better… we met Nuna..!!’
One big happy: The former couple were holidaying with their two daughter Sam and Lola, both seen here
However, if Charlie had any ideas about a reconciliation with Denise he may be have to get to the back of the queue.
Starship Troopers star Denise has been pictured in the company of some of her other old flames recently.
She was spotted enjoying a candlelit dinner with Patrick Muldoon in Bevery Hills last week.
Denise looked to be on very good terms with the Days Of Our Lives hunk, walking with her arms round the actor as they went for their meal.
And in November it was reported she had reunited with Bon Jovi guitarist Richie Sambora.
The pair were seen dining together and were said to be rekindling their romance after breaking up four years ago.