Admittedly "devastated" when Megan Fox broached the topic after they separated in 2019, with the actress ultimately filing to end their nine-year union in November 2020, Green has said that he was still blindsided when the end came.

"I honestly felt at that point like, ‘We got this,’" the Beverly Hills, 90210, alum recalled on a May 2025 episode of the Oldish podcast. "We had already been through almost 15 years of a relationship together so I believed it and I think she believed it at the time also.”

But as parents of Noah, 13, Bodhi, 12, and Journey, 9, together, there wasn't time for anyone to retreat to a corner to lick their respective wounds. 

You've got to "pick your battles," Green—who's also dad to Zane, 4, with fiancĂ©e Sharna Burgess and Kassius, 21, with ex Vanessa Marcil—told E! News in 2024, noting that however he was feeling toward his ex-wife at any given moment had to come in a distant second to showing up for their children. 

When it comes to separating from your romantic partner, "The only choice you have is how it affects the kids," the 52-year-old explained. "So, you have to decide, ‘OK, it's not about us getting along anymore. It's about us co-parenting, which is a totally different situation.'"

Fox, who also shares 15-month-old daughter Saga with ex-fiancé Machine Gun Kelly, has similarly made a point of staying outwardly positive when it comes to her ex-husband.

"I think it's really important when people separate to never ever disparage the other parent or even in a passive aggressive way, make remarks," the 40-year old said in 2023 on The Drew Barrymore Show. "I don't let anything in my energy like that when I'm around my kids because, if I don't accept and love their father, I'm rejecting a part of them because he's a part of who they are always."

And that sort of mindfulness pays dividends, as Green said on a November episode of the Inside of You podcast that he and Fox were doing great.

Fox and Burgess got along "amazingly," he shared, while he and the Transformers actress did their best to "stay out of each other's way."

“I realized early on people separate for a reason,” Green said. “We're not gonna all of a sudden just be great friends as we're co-parenting.”

So, in their case, removing those "unrealistic expectations" from the equation was the way to move forward.

And though the road had its potholes—with Fox publicly accusing Green weeks before she filed for divorce of "feeding the pervasive narrative that I'm an absent mother and you are the perennial, eternally dedicated dad of the year"—hammering out a 50/50 custody arrangement was also key to avoiding future clashes.

Their split was finalized in February 2022. Meanwhile, Green said on Oldish that it was "really hard" for him to see Fox move on so quickly with MGK—"It went from, ‘Hey we should get a divorce’ to all of a sudden like, ‘Hey my twin flame,’ and ‘I manifested him'"—but that was yet another thing he couldn't outwardly dwell on, for the kids' sake.

Though, when Fox and MGK (born Colson Baker) broke up before their daughter was born, Green made it publicly clear he was on Team Fox.

And there still doesn't seem to be any love lost between him and MGK, but the focus is now on the ties that bind the next generation.

Zane and sister Saga are "deeply in love," Burgess told People in June 2025, marveling over the "unbelievably big family and tribe with amazing kids in it" she is now a part of after wondering whether she was simply destined to have one baby.

"We're all so very lucky," said the Dancing With the Stars alum, who met Green in 2020 on a blind date set up by his business manager. His "kids are amazing and they’ve become built-in babysitters. The age gap actually works really well. We’re thrilled."

See more scenes from their blended family world in photos:

Brian Austin Green enjoyed a lazy morning snuggled up with kids Noah, born in 2012, Bodhi, born in 2014, and Journey, born in 2016, who he shares with ex Megan Fox.

After Brian and Megan split in 2020, the Beverly Hills, 90210 alum found love with his Dancing with the Stars pro partner Sharna Burgess. The two welcomed son Zane in 2022, and announced their engagement the following year. 

Sharna sharing a tender moment with Zane and his older siblings. 

Meanwhile, Machine Gun Kelly—whose real name is Colson Baker—welcomed daughter Casie with ex Emma Cannon in 2009. He went on to get engaged to Megan in 2023.

Despite her commitment to co-parenting, Megan has said it's not always a walk in the park. “It’s hard to not feel obligated to be with them all the time or to constantly feel like I’m not doing a good enough job,” she admitted to Glamour UK in 2022, “but I’m also separated from their father. So, I can only have them half of the time. That just is what it is.”

Brian's blended family includes his adult son Kassius, whom he shares with ex Vanessa Marcil. The actor posed with Sharna and all five of his kids for a festive family photo in December 2023.

For Megan, motherhood keeps her grounded. "When I step back, I know how connected I am and I’ve always been and how present I’ve always been,” she told Sports Illustrated Swimsuit in 2023. “I see the reflection of the type of mother that I am in their eyes and in their behavior."

In 2022, the Jennifer's Body star posted a rare photo alongside the "Emo Girl" singer and his daughter, taken at his 27 Club Coffee shop in Ohio.

The hitmaker turns to his daughter for advice on his music. "I trust her opinion more than I trust my own now," he said on The Kelly Clarkson Show in 2021. "Like, she has her finger on the pulse of what's hot, or if I'm doing a song and it's the right one, she'll confirm it."

In honor of Mother's Day 2024, Brian paid a loving tribute to Sharna. "You are an incredible mother and fiancée," he wrote on Instagram, "and we all love you to death."

Megan rarely features her kids on social media—for one very good reason. "I knew when they were very young, I wanted to try to protect them however I could, especially limiting their exposure to the internet," she told Glamour UK in 2022. "So far, we’ve done a really good job and we maintain their innocence in a lot of ways, but I know I can’t protect them forever."

Brian's golden rule for co-parenting? Picking his battles. "People make a mistake of thinking that they're gonna do things so the separation doesn't affect the kids," he told E! News in 2024. "Of course it's gonna affect the kids. The only choice you have is how it affects the kids."

Likewise, Megan makes a point not to speak ill of her kids' father around them. "I don't let anything in my energy like that when I'm around my kids," she said on The Drew Barrymore Show in 2023, "because if I don't accept and love their father, I'm rejecting a part of them, because he's a part of who they are always.

Brian snapped a pic of his brood having some fun in the sun in Malibu, captioning the Instagram post, "Great day!!"

MGK—pictured with Casie at the Kids' Choice Awards in 2019—credited his daughter with helping him get clean after she told him she knew when he was high. "That was step one for me," the musician, who has been sober since August 2023, said on the Million Dollaz Worth of Game podcast. "As a father and as a man, to be the father I wish my dad would have been, I have to break this generational curse for my kid."

Sharna has thanked Brian's kids for preparing her to be a mom. "I got to test out motherhood with these guys," she said on the Quite Frankly podcast in 2023. "I got to learn things and grow with them, about parenting and understanding kids ... and knowing, 'Oh my God, I think I can be really good at that.'"

In 2020, Brian was a celebrity contestant on The Masked Singer. "I was super excited for my kids to watch it with me," he wrote on Instagram, but "they fell asleep after 15 min."

No job is too big for the TV star and his mini-mes.

While Brian revealed he got a vasectomy eight weeks after Zane was born, that doesn't mean he couldn't have it reversed down the road. "If we have the space and the ability to, would we love to? I certainly would," Sharna said on the Oldish podcast in January. "But we do have four young kids in the home and life is very, very busy."

On March 27, 2025, Megan and MGK welcomed the newest member of their blended family: a baby girl, who arrived into the world with her own original score composed by the rocker and his musical pals including Travis Barker.

"She’s finally here," MGK exclaimed in a post on Instagram, "our little celestial seed."

Brian and Sharna enjoyed a sweet treat and some sweet laughs with Zion, Noah, Bodhi and Journey in April 2025. 

MGK spent quality time with his oldest daughter Casie shortly after announcing the birth of his and Megan's baby girl.Â