Dax Shepard thinks there was a "ton of jealousy" at the start of his romance with Kristen Bell

Dax - who has also battled substance abuse issues in the past - shared:

"My wife is incredibly confident as she should be.

"There was a ton of jealousy at the beginning of the relationship, for pretty good reasons. I had been in an open relationship for nine years.

I was blacked out a big chunk of my life. There were a lot of things for her to be concerned about."

The loved-up couple got engaged in 2009, and Dax admits that it marked a turning point in his life.

The actor - who married Kristen in 2013 - told 'The Drew Barrymore

Show': "I’d say once we got engaged some kind of switch for me seemed to change.

"I find her to be incredibly not jealous, which is a very hot characteristic in a partner."

Kristen - who has Delta, six, and Lincoln, eight, with her husband - confessed to having fears about Dax at the beginning of their romance.

She said: "I’m a big believer in forgiveness and second chances.

"In the beginning it was nerve-racking dating Dax knowing his history of recovery and that he’s just this big force, but I was like, 'No, he’s got it inside of him. He’s got all this goodness.'"

Kristen now feels that her decision to settle down with Dax has been justified.

She explained: "I have been proven right, because nobody is more affectionate. I’m not even as affectionate with our girls as he is.

Hopefully they will grow up healthier and happier and safer."