Green's 'confidence' boosted by Megan Fox

Megan Fox is one hot — and capable! — stepmom.

Fox's husband Brian Austin Green has high praise indeed for her devotion to Kassius, his 8-year-old son with ex Vanessa Marcil.

"[Megan] is absolutely my better half in parenting," Green, 37, says of Fox, 24, in the October issue of Details. "She just gets it. It's instinctual for her."

PHOTOS: Megan's sexy red carpet style

Kassius was reportedly one of the few attendees at the couple's hush-hush wedding in Hawaii this past June. Fox called herself "really maternal" in the March issue of W magazine, and shares a home with Green and the little boy.

The actors began dating about six years ago — when Fox was just 18, and he was 31. "When we met, I had just separated from Kash's mom and a relationship was the last thing on my mind, " Green tells the magazine. "It's not something I ever thought would be serious. But she brought out parts of me that I had lost in my last relationship. I had come off of '90210,' and I never wanted to leave my house. I was afraid of the press. I was afraid of people's opinions of me," he confides. "Megan was a big part of boosting my confidence. And at the same time, I was somebody responsible and grounded for her to be around. We just matched."