Brian Austin Green is amazed how he and Megan Fox have transformed their relationship.

More than four years after the Beverly Hills, 90210 alum’s marriage to Megan ended , he detailed how he and his ex-wife have navigated co-parenting kids Noah , 13, Bodhi , 11, Journey , 9 —and how they’ve gotten a special assist from Brian’s fiancée Sharna Burgess .

“Megan and I are great,” Brian shared on the Inside of You podcast Nov. 25. “Megan gets along with my fiancée , Sharna, amazingly.”

The 52-year-old—who also shares son Kassius , 23 , with ex Vanessa Marcil and 3 -year-old Zane with Sharna—noted that he and Megan, 39, “co-parent well” because they try to “stay out of each other's way.”

“I realized early on people sepa

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