Why Brian Austin Green Called Out Megan Fox's Ex Machine Gun Kelly

After Brian Austin Green posted an Instagram Stories calling out his pregnant ex-wife Megan Fox’s former fiancé Machine Gun Kelly, the Beverly Hills, 90210 star revealed what motivated him to do so.

By Brahmjot Kaur Feb 06, 2025 3:19 PM
| Updated Feb 06, 2025 7:09 PM
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Watch: Brian Austin Green Reveals Why He Slammed Megan Fox's Ex Machine Gun Kelly

Brian Austin Green will always have ex-wife Megan Fox’s back.

After the Beverly Hills, 90210 alum slammed the pregnant Transformers star’s ex-fiancé Machine Gun Kelly following their split, the actor shared insight into his decision to make the post.

"That's not something that I normally do,” Brian told People in an interview published Feb. 6, “but it just really at the time, really got under my skin to read about his sort of take on it. So I spoke my mind, but then I've since come to terms with the fact that I won't do that anymore.” 

The 51-year-old—who was married to Megan for 10 years—concluded that moving forward, he’s “going to shut up and just sit back.” 

Indeed, he sent a stern public message to the “Lonely Road” musician about his behavior following their breakup, which he deleted shortly after. 

“Just be honest for once in your life,” Brian—who shares kids Noah, 12, Bodhi, 10, and Journey, 8, with Megan—wrote on his Instagram Stories Feb. 2. “Stop caring so much about how you’re perceived that you will try and drag other people.”

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Why Pregnant Megan Fox's Ex Brian Austin Green Is "Heartbroken" Over Her Split From Machine Gun Kelly

News of Megan and MGK’s breakup came just one month after confirming they were expecting a baby together in November. And Brian’s recent comments weren’t the first time he’s gone to bat for his ex. Just days after the split, the Knots Landing actor called out the “My Ex's Best Friend” singer’s immature behavior. 

“He’s in his 30s, isn’t he?” he said to TMZ in December. “In your 30s, f--k. Grow up. Like, she’s pregnant.”

Despite his aggressive callout, Brian—who also shares 2-year-old son Zane with fiancée Sharna Burgess and 22-year-old son Kassius with Vanessa Marcil—saw it as a sweet opportunity to strengthen their blended family’s bond.

“I just want the best for her,” he said. “I’m heartbroken about it because I know she’s been so excited and the kids are so excited for life and the change and all of that.”

Gabe Ginsberg/Getty Images for The Global Gaming League/ Presley Ann/Getty Images for GQ/Romain Maurice/Getty Images

“I hope that the best outcome that could possibly happen happens,” he continued. “For her, for the baby and for our kids.” 

For Megan’s part, she’s remained quiet following her and MGK’s breakup. But it’s no surprise as the Jennifer’s Body actress previously admitted that she prefers to keep details of their relationship out of the spotlight. 

"I think that what I've learned from being in this relationship is that it's not for public consumption," she explained to Alex Cooper on the Call Her Daddy podcast last March. "So I think, as of now, I don't have a comment on the status of the relationship. What I can say is that it’s what I refer to as being my 'twin soul', and there will always be a tether to him no matter what."

Read on for a look back at Megan and MGK’s romance.

July 2020: How They Met

The couple did their first podcast together and detailed how they met on the set of the movie Midnight in the Switchglass. They also became Instagram official in July when MGK posted a selfie of the couple with the caption, "Waited for eternity to find you again..."

August 2020: Megan Professes Her Love

The actress shared the first photo of herself with her new man captioning it, "Achingly Beautiful Boy... My heart is yours."

November 2020: Red Carpet Official

The couple made their first red carpet appearance at the American Music Awards. The same month, the actress files for divorce from estranged husband Brian Austin Green, with whom she shares three sons.

April 2021: Double Birthday Date

Double date! The duo celebrates MGK's birthday with friends Kourtney Kardashian and boyfriend Travis Barker.

May 2021: iHeartRadio Music Awards

Pretty in pink! Megan supports Machine Gun Kelly as they attend the iHeartRadio Music Awards in Los Angeles.

May 2021: Billboard Music Awards

The lovebirds arrive at the 2021 Billboard Music Awards in Los Angeles.

May 2021: Onstage Love

The two appear onstage during the rocker's show at the Barstool Sports Indy 500 party at Grand Park in Westfield, Indiana.

January 2022: We're Engaged

New year, new relationship status! On Jan. 12, 2022, Megan Fox and Machine Gun Kelly announced on Instagram that they were engaged. "Yes, in this life and every life," the musician wrote on Instagram. 

October 2022: Pam & Tommy

The two dressed up as Pamela Anderson and ex-husband Tommy Lee at the annual Casamigos Halloween party.

February 2023: Grammys Date Night

The two embraced on the red carpet on music's biggest night.

May 2023: London Date Night

Megan supported MGK at the unveiling of The 8th Deadly Sin - GOSSIP, a limited-edition ring collection collab by the musician and Stephen Webster in London.

October 2023: Happy Halloween

The two also partied at Vas Morgan and Michael Braun's Halloween party.

October 2023: Kill Bill Couple

The two appeared at the annual Casamigos Halloween party.

March 2024: Megan Gives Relationship Update

The actress confirmed that she and MGK had at one point called off their engagement.

"What I've learned from being in this relationship is that it's not for public consumption," she said on the Call Her Daddy podcast. "So I think as of now, I don't have a comment on like the status of the relationship."

She continued, "What I can say is, that is what I refer to as being my 'twin soul', and there will always be a tether to him no matter what."

November 2024: Baby on Board

The couple shared that they were expecting a baby together with Megan writing on Instagram, "Nothing is ever really lost. Welcome back," alongside a photo posing naked covered in black paint and holding her baby bump. 

She also included a picture of a pregnancy test with the word, "Yes."

 

November-December 2024: Breakup

In late November, shortly after confirming Megan's pregnancy, the duo called it quits, multiple outlets reported Dec. 10.

March 2025: It's a Girl!

The duo welcomed daughter on March 27, 2025. According to MGK, Megan gave birth while listening to a score composed by himself and pal Travis Barker.

The rocker said he named their baby girl Saga Blade Fox-Baker because she's the five-year culmination of "coming, disappearing, coming back again, disappearing, coming back again."

 “She is an epic story," he told Today. "That's what saga means.”

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