Denise Richards was "incredibly naive" to Charlie Sheen's addiction when they first met.

Denise Richards was 'naive' to Charlie Sheen's addiction issues

Denise Richards was 'naive' to Charlie Sheen's addiction issues

The 52-year-old star - who got engaged to the 'Two And A Half Men' actor in December 2001 and married him seven months later - has explained how he had been "sober for four years" at the time and she never had any concerns he would "relapse".

She told Bethenny Frankel's 'Just B' podcast: "For me, it was no question. I said, ‘No,’ I didn't know that person.

"I only knew who I met. And that was a man who had been sober for four years.

"I didn't judge him for his past because I figured, well, his past made him who he is today.

"And the person that I met was very different from the person that spiraled…”

The 'Real Housewives of Beverly Hills' star - who split from Charlie in 2005 when she was six months pregnant with their daughter Lola - insisted it wasn't "boring" being with someone sober, as she noted she wasn't much of a "partier" herself.

She explained: "I wasn't thinking, ‘Oh, shoot. I just started dating Charlie Sheen and I just read all these crazy stories about him and how come we're not doing [those things]?”

She did reveal how she encouraged Charlie to play Charlie Harper in 'Two and a Half Men', which became one of his most iconic roles, despite his nerves "about starting a new TV show after 'Spin City' got cancelled".

She recalled: "I read the script for ['Two and a half Men'] and said, 'You have to do this show.'

"He was going to do a different show,” she added. “And I read the script and I go, 'You're crazy for not doing this.'"

And she has suggested the success of the show - which he starred in from 2003 to 2011 - had an impact on his sobriety.

She said: "I think because [of] the success of 'Two and a Half Men' and the money, I think that led to him getting back into not being sober."

Denise - who filed for divorce in 2006 - insisted she didn't want to speak for her ex about the impact of the show, but added: "All I know is he was no longer the person that I married and no longer sober."

After getting fired from the show following a series of rants directed at creator Chuck Lorre, Charlie got sober and later admitted it was "awful" looking back at his downfall, and the pair have since made amends.