Megan Fox and Machine Gun Kelly (real name Colson Baker) have had one of the most high-profile, passionate, and volatile relationships in recent Hollywood memory.
From the very beginning, their romance has made headlines for its intensity and unpredictability. But in a shocking turn, just weeks after Megan reportedly revealed she was pregnant with their first child together, news broke that the two had split once again—this time under much darker and more complicated circumstances.
The breakup has reignited long-standing speculation about the true cause of their repeated fallouts. Now, according to several sources close to the couple, the root of their most recent and possibly final separation lies in something far more serious than just a lovers’ quarrel.
Allegations of cheating and a deep fracture in trust have surfaced, leading fans and insiders alike to ask: Did Megan Fox and Machine Gun Kelly break up because of cheating rumors?
A Pregnancy Announcement Followed by Heartbreak
The timing of their breakup couldn’t have come at a more unexpected moment. Fox, 37, had reportedly told those close to her that she and MGK, 34, were expecting a baby—what would be their first child together, though both have children from previous relationships.
With a baby on the way, many assumed the couple had moved past their past issues and were entering a new, more stable chapter of their relationship. Instead, things took a turn for the worse shortly after the pregnancy news became known.
According to insiders, Megan ended the relationship not long after discovering something on Kelly’s phone—something she reportedly “didn’t like.” Though the exact contents remain unknown, what she saw was enough to make her “not trust him again.” That discovery, paired with ongoing trust issues that have plagued their relationship, led her to end things despite the pregnancy.
The Allegations and Denials
While neither Fox nor MGK have spoken publicly about the breakup, sources have painted a clearer picture of what happened behind the scenes. According to Us Weekly, Megan believes that MGK may have cheated on her while she was pregnant—a suspicion that has rocked her to the core.
One source close to the couple claimed that MGK is “very flirtatious, and overly so sometimes, especially with people who DM him.” That behavior alone reportedly led Megan to question his loyalty.
The source added that while Megan suspected infidelity, MGK has been “denying it.” Still, the suspicion was enough to fracture an already fragile relationship. For Megan, being pregnant while dealing with these kinds of doubts made the betrayal feel even deeper.
“This has happened many times before,” a source said, referencing their on-again, off-again history, “but this time hurt even deeper because she is pregnant.”
That line alone speaks volumes. Though Megan has always been private about her emotions, sources say the trust issues she has with MGK have built up over time, and the recent discovery on his phone was the final straw.
While the cheating has not been confirmed, the feeling of betrayal and the inability to trust him again reportedly made it impossible for Megan to continue the relationship in its current form.
Their Volatile Relationship History
Megan Fox and Machine Gun Kelly first met in 2020 on the set of the thriller Midnight in the Switchgrass. They quickly became inseparable, and by 2022, they were engaged. Their bond was fiery and passionate, filled with poetic declarations of love, matching tattoos, and even vials of blood exchanged as a romantic gesture.
But with that passion came turbulence. Their relationship has always been emotionally charged, and breakups followed by reconciliations became part of their pattern.
Sources close to the couple have noted that this volatility was part of what kept their bond intense—but it also made it incredibly fragile. “Their relationship has been so passionate, and it has always been volatile,” one insider told Us Weekly. “They break up and get back together — and that comes from being passionately in love with each other.”
But passion isn’t always enough. When suspicion and mistrust creep in, even the strongest emotions can be overridden by fear, doubt, and heartbreak. And this time, Megan appears to be prioritizing her emotional well-being and the future of her child over continuing a cycle that no longer serves her.
Moving Forward, With or Without MGK
Despite the painful circumstances of the breakup, sources say Megan remains focused on what matters most—her health, her pregnancy, and her desire to co-parent in a stable environment. “No matter how she feels about MGK, she has a lot of love for him and is excited that they are going to become parents,” the source said.
That speaks to Megan’s maturity and emotional resilience. Even though the romantic relationship may be over, she reportedly wants to move forward with positivity and create a healthy foundation for their child.
At the time of the split, Megan and MGK reportedly hadn’t been in contact for at least a week, signaling a real period of distance and reflection. It’s not clear whether this separation is permanent, but sources close to them admit there’s always a chance of reconciliation. After all, this isn’t the first time they’ve parted ways.
However, those close to Megan say this break feels different. She has allegedly told her inner circle that she’s done and is “moving on” for real this time. Given that she made this decision while carrying their child, it’s clear that her priority now is protecting herself and her baby from further emotional harm.
Trust Issues That Couldn’t Be Repaired
So, did Megan Fox and MGK break up because of cheating rumors? The short answer appears to be yes—though it’s not necessarily about confirmed infidelity, but rather the ongoing trust issues those rumors created. It wasn’t just one incident; it was a buildup of behavior that Megan could no longer ignore.
What she found on MGK’s phone reportedly shattered any lingering confidence she had in their relationship. And while MGK is said to deny the cheating, the damage was already done. The suspicion alone was powerful enough to end a relationship already teetering on the edge.
Trust, once broken, is incredibly difficult to rebuild—especially in a relationship as intense and emotional as theirs. Even if there’s love, suspicion can quickly overshadow everything, making it impossible to move forward with the kind of clarity and stability a pregnancy requires.
