A new wave of celebrity ex drama is making headlines this week as actor Ben Affleck is reportedly not hiding his disapproval of ex-wife Jennifer Garner’s longtime boyfriend, John Miller. Despite Garner’s years-long relationship with the tech executive, sources claim Affleck still struggles to come to terms with her moving on — particularly with someone so removed from the Hollywood spotlight.

The report, first published by ShuterScoop, comes just one day after Garner and Miller were spotted sharing a rare public moment of affection at a children’s charity event in Santa Monica on June 22. According to insiders, Affleck saw the images — and the reaction wasn’t exactly supportive.

“Ben doesn’t get it,” a source reportedly told ShuterScoop. “He’s constantly asking, ‘That guy? Really?’”

While Garner and Miller have largely kept their relationship private, it’s widely believed the connection is serious. Garner has reportedly introduced Miller to her three children — Violet, Seraphina, and Samuel — and insiders say he’s become a stable presence in their daily lives. Still, Affleck, who shares co-parenting duties with Garner, is allegedly unimpressed with her choice of partner.

“He still thinks he’s the main character in Jen’s life,” the source claimed, hinting at lingering emotional ties on Affleck’s part. “Seeing her build a calm, normal life with someone who isn’t a celebrity — it drives him nuts.”

The alleged friction comes amid Garner’s attempts to keep her personal life out of the headlines. Unlike the high-profile relationships both she and Affleck have been part of in the past — including Affleck’s rekindled marriage with Jennifer Lopez — Garner and Miller’s bond has developed largely under the radar.

“John is everything Ben’s not,” the source continued. “And that’s exactly what Jen wants now.”

Affleck, 52, is known for his commanding presence and on-screen charisma — attributes the insider suggests he may still rely on off-camera. According to the source, Affleck has allegedly mocked Miller behind closed doors, reportedly calling him “vanilla” and “soft.”

“Ben’s used to being the most captivating guy in any room,” the source said. “John makes him feel… unnecessary.”

The reported jealousy has sparked conversations among fans and celebrity watchers alike. Some see Affleck’s reaction as a symptom of unresolved feelings, while others suggest it reflects a deeper discomfort with losing control of a narrative that, for years, revolved around the Garner-Affleck household.

Garner, now 53, has made it clear over the years that her focus remains on stability — both for her children and herself. While she’s stayed largely out of the celebrity relationship spotlight since divorcing Affleck in 2018, she and Miller have quietly maintained a relationship described by friends as “steady, grounded, and supportive.”

Meanwhile, Affleck’s own personal life has had its own share of media attention, particularly following his high-profile reunion and 2022 marriage to Jennifer Lopez. The couple has faced persistent speculation over marital tensions in recent months, though neither party has confirmed any rift.

The alleged tensions between Affleck and Miller — or more accurately, Affleck’s reaction to Miller — hint at the challenges that can linger even years after a marriage ends. Emotional attachments, co-parenting, and the desire to remain central in a former partner’s life can complicate otherwise peaceful transitions.

So far, neither Affleck nor Garner has commented publicly on the reports. But if the source’s claims are accurate, the dynamic between these three adults — one Oscar-winning actor, one tech CEO, and one quietly grounded star — may be far more layered than the public ever realized.

As Garner continues to build a life of quiet normalcy and Affleck navigates his own public and private pressures, the ex-couple remains one of Hollywood’s most watched — and complicated — stories.