Brian Austin Green has opened up about the moment he knew his and Megan Fox's marriage was dead.

The Beverly Hills, 90210 actor had a strange dream in autumn last year, when Megan had left the family home to shoot a movie for five weeks - and it was then he knew their relationship was over.

Speaking on his podcast, ...With Brian Austin Green, the Hollywood star recalled: "About three weeks into her being gone and shooting, I had a dream, which most people dream, but I don't ever remember my dreams… but, I had this dream that she came back from work, and that we were distant, that things were off, that things were weird."

When he messaged her the next day about his dream, Megan was apparently "shocked" by it, but reassured him that everything was "fine".

Megan Fox and Brian Austin Green have split after 10 years of marriage

But the cracks started appearing when she came home, and everything in his nightmare began coming true.

"I gave her a few weeks, I figured you know, she's been out of the country, she's jet-lagged, she's been shooting nights, I have to give her some time to recoup a little bit and get back into life. And, so, I did," he went on.

When Brian confronted her on the distance between them, Megan cryptically told him they would talk later - and when they finally had their marriage-ending conversation, he was left reeling by what she told him.

Brian had dreamt of their split weeks before their ended their marriage

"She said, 'You know, I realised while I was out of the country working alone that I feel more like myself, and I liked myself better during that experience, and I think that may be something worth trying for me'," Brian recalled.

"And I was shocked and I was upset about it, but I can't be upset at her, and I wasn't upset at her because...she didn't ask to feel that way, it wasn't a choice she made, that's the way she honestly felt."

The pair decided to take some time to mull over their future, but after a few weeks it seemed clear they would have to make a clean break to avoid a potentially "volatile situation".

Megan and Brian share three children

"There's no reason for it to be [that way] with us. Neither one of us did anything to each other, she's always been honest with me and I've always been honest with her," he went on.

"And I know she will always love me and I know as far as a family, what we have built is really cool and really special. So we decided let's make sure we don't lose that. That no matter what we're always friends with each other and we're a united front with the kids."

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Brian also addressed his ex's rumoured romance with Machine Gun Kelly - real name Colson Baker - who has been spotted today driving with Megan back to her Calabasas home in LA.

Megan is rumoured to be dating Machine Gun Kelly, left, pictured with Pete Davidson at the Golden Globes 2019 afterparty

"I wanted it coming from my mouth. I wanted people to hear everything from me and then this is it," Brian said.

"I don't want this guy Colson, who I have never met, who she said nothing but really kind things about - I don't want him to be vilified because nobody did anything wrong. It's not like we are separating or anything because somebody cheated or somebody hurt somebody.

"I feel like people are on paths in life sometimes and you're on the same path, and you walk that path together, and things are working and then paths just kind of separate sometimes."

Megan Fox has shared the first photo of her baby son
Megan with her baby son, who was born in 2016

Brian added: "I don't want her to be looked at in a negative way or him to be looked at it a negative way for doing that. That's what good people do. Good people step up and help people that need help, and that's what he is doing."

Brian and Megan wed in 2010 and share three children together.

She filed for divorce in 2015, but the couple reunited after a rocky period.

Brian is now living in his Malibu bachelor pad while Megan remains with the kids in their marital home in LA.