Myleene Klass Says Ex-Husband Cheated With Famous Celebrity on Her Birthday
It’s hard to imagine the sheer shock and pain of discovering your partner’s betrayal, but for Myleene Klass, that heartbreak came wrapped in an even crueler twist: it happened in her own home, on her birthday, in front of friends and family.
In a recent candid chat on the "We Need to Talk" podcast with Paul C. Brunson, Myleene pulled back the curtain on one of the darkest moments of her life. She recounted how she caught her ex-husband, Graham Quinn, in a moment that left little doubt—though they weren’t technically “caught in the act,” the boundary had clearly been crossed, and the trust was shattered.
What made it nearly unbearable was that the other woman was a well-known celebrity—someone the world saw as a role model for family values. While Myleene’s world crumbled, she had to watch as this public figure carried on her brand of togetherness and seemingly perfect family life, all while knowing the messy, painful reality beneath the surface.
On X/Twitter, @education_24x7 recently shared a post:
"Well, talk about a birthday surprise! Myleene Klass recently shared the shocking revelation that she caught her ex-husband cheating on her at her own birthday party! Picture this: Myleene walked in on her partner with a famous celebrity on the balcony — and it was on her special day! Talk about an unforgettable party foul!"
Of course, the aftermath wasn’t kept private for long. Myleene was forced to navigate not just her own devastation, but relentless tabloid attention. Every painful detail seemed to go public, compounding the heartache and pushing her into a moment where vulnerability felt raw and exposed. There’s a unique cruelty when your most personal pain is served up for public consumption—and Myleene doesn’t shy away from that truth.
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Then came the divorce, which, as she describes, felt more like a cold transaction than the emotional ending of a marriage. One detail she shared feels almost cinematic in its coldness: Quinn allegedly presented her with a Post-it note scribbled with a number, as if years of life together could be boiled down to a single rough figure.
To make matters worse, she found out he’d been planning his departure for a while, purchasing property in secret and hiding away money. The news was broken to her by none other than a pop star friend—a detail that shows just how surreal and isolating her experience must have felt.
Despite the wreckage, Myleene’s determination as a mother took center stage. Raising her daughters, Ava and Hero, meant everything to her, and she threw herself into parenthood, finding strength she didn’t know she had. Over time, her pain evolved into purpose. Through her advocacy for miscarriage awareness and women’s health, she not only rebuilt herself but became a source of hope for countless others facing private heartaches of their own.
And, in time, love found its way back into her life. With Simon Motson, Myleene discovered a gentler, more supportive partnership—one marked by understanding, kindness, and genuine support. Their relationship helped her redraw what happiness meant and gave her the fresh start she deserved.
Reflecting on that period now, Myleene is honest about the scars but also the growth. Heartbreak, betrayal, and all the unwanted headlines forced a kind of resilience that changed her for the better. She came through not because the pain disappeared, but because she chose to focus on her girls, her values, and her peace. Her story is proof that even the deepest wounds can lead to new beginnings—stronger, wiser, and full of hope for what’s next.