Megan Fox and Brian Austin Green have gone their separate ways. 

The 46-year-old actor revealed he and the 34-year-old actress have "been trying to sort of be apart." The Beverly Hills, 90210 star shared the news on Monday's episode of his With Brian Green podcast. 

Green told listeners Fox went on a five-week work trip last fall. While she was away filming a movie, Green had a dream that Fox returned and that they were "distant." He then texted the Transformers star, and she assured him everything was fine. But once Fox returned, Green felt like they were behaving "almost exactly" like they had in his dream. So, he brought it up to Fox again and she suggested they have a talk.

"She said, 'You know what? I realized 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 might be something worth trying for me,'" Green 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."

So, they decided to "take some space." Reports soon spread that they were living apart, and Green said "things just didn't really change from there." However, he made it clear "neither of us did anything to each other" and that they've had an "amazing relationship."

Green also addressed rumors about Fox and Machine Gun Kelly, who have recently been spotted hanging out together. Green said the two are "good friends at this point."

"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," he said. "That's what good people do. Good people step up and help people that need help, and that's what he is doing."

This isn't the first time Fox and Green have split. In fact, they've called it quits a few times over the course of their relationship, including in 2015 when Fox filed for divorce. However, she ultimately filed to dismiss the divorce proceedings.

To look back at their highs and lows, check out the gallery.

Brian Austin Green, Megan Fox, 2007

Dimitrios Kambouris/WireImage for Bragman Nyman Cafarelli

Simon Pegg, Megan Fox, How To Lose Friends and Alienate People

Kobal/Shutterstock

Megan Fox, Brian Austin Green

INFphoto.com/Instar

Megan Fox, Brian Austin Green

O'Neill/White/INFphoto.com/Instar

Megan Fox

Steve Cho/Penta Press/Shutterstock

Megan Fox, Brian Austin Green

SplashNews.com

Megan Fox, Brian Austin Green, 2010 Teen Choice Awards

Kevin Mazur/TCA 2010/WireImage.com

Brian Austin Green, Megan Fox, Disney World

Gene Duncan/Disney via Getty Images

Megan Fox, Shia LaBeouf

Sean Gallup/Getty Images

Brian Austin Green, Megan Fox

ADTJ/AKM-GSI

Megan Fox, pregnant, 2012

SplashNews.com

Megan Fox, Brian Austin Green, Ellen Show

The Ellen Degeneres Show/NBC

Megan Fox, Brian Austin Green

CPR/Rocstar/FAMEFLYNET PICTURES

Megan Fox, CinemaCon 2016

Todd Williamson/Getty Images for CinemaCon

Brian Austin Green, Megan Fox, Vanessa Marcil

Jonathan Leibson/Getty Images; Steve Granitz/WireImage; Paul Archuleta/FilmMagic

Megan Fox, Brian Austin Green

Rob Latour/Shutterstock

Megan Fox, Machine Gun Kelly

Getty Images

To listen to Green's full podcast episode, click here.

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