Lindy Klim's dramatic new infidelity claims about Michael shatter their 'friendly exes' image: His weary response to decade-old rumours as their cosy reunion suddenly looks very different

Olympian Michael Klim has issued a weary response to his ex-wife Lindy after she revived long-forgotten rumours of his alleged infidelity during their marriage.

The couple announced their separation in February 2016 after spending about a year trying to save their relationship.

Claims Michael had been unfaithful before the split were extensively reported by New Idea and later picked up by other outlets, including The West Australian.

But in the decade since, the allegations had largely faded from public view, with the former couple appearing to maintain an amicable co-parenting relationship while raising their three children, Stella, Rocco and Frankie, who are now young adults and teenagers.

Indeed, they appeared to have grown closer following the collapse of Lindy's second marriage in 2024 and Michael's diagnosis with chronic inflammatory demyelinating polyneuropathy (CIDP), a rare autoimmune neurological disorder.

But their image as friendly exes - perfectly captured in a cosy Christmas reunion almost two years ago - is now shattered after Lindy, 47, decided to open up the old wounds by speaking about her marriage split on the Parenthood Podcast, hosted by relationship expert Leonie Akhidenor, earlier this month.

'The first [relationship] kind of happened really quickly in the sense that there was some kind of infidelity that happened, so my whole world came crashing down,' she said, referencing her decade-long marriage to Michael. 

'That was a big moment for me because I was like, "Okay, well, I can't stay anymore. I have to leave." That was a really difficult decision... It was just awful.' 

She added: 'That was very traumatic and I was very sad. It all happened very quickly. It was a horrible, horrible time... I was properly depressed, to be honest.'

When the Daily Mail approached Michael for comment this week regarding his ex-wife's claims, he sounded resigned to the fact she had brought them up yet again. 

'I don't really want to comment on her podcast and social media activity. I'm okay, thank you. I don't want to comment about this,' he said. 

'This is something she chose to talk about. I'm not commenting on anything in our private lives that happened.'

'I don't even want to tell you how I feel,' he added bluntly.

During her interview, Lindy went on to claim things between them were rocky after the split because she struggled to get along with Michael's subsequent girlfriend, Desiree Deravi.

Michael and fashion designer Desiree, 46, went public with their relationship after his separation from Lindy was announced. The Mail does not suggest Desiree was involved in, or had any connection to, the infidelity claims. 

Michael and Desiree eventually called it quits in May 2019. 

'The children's dad [Michael] had a new partner at the time... and it was really hard for me to see my children with that person,' she said.

'It was horrendous, actually, it was a really difficult time, but they ended up breaking up... That is a really difficult thing to experience.'

In November 2016, Lindy told Stellar magazine that she 'felt really hurt and humiliated' following her separation from Michael, adding that she only found out about his relationship with Desiree through the media.  

'I felt very let-down; that was probably the humiliation of finding out about things in a magazine. I didn't know that was going on, which was really hurtful,' she said.

'Obviously we'd been struggling for a while, but I thought we were keeping a hold on it and trying really hard to work it out,' she added.

'I felt like I'd failed in a way, as being a wife. I was feeling a bit like, "Oh my God, I couldn't keep all this together. What's wrong with me?"'

Months later, in July 2017, Michael publicly accused Lindy of 'trolling' Desiree using the 'fake profile @j_cross1' after Desiree posted a selfie on Instagram with his two daughters at the beach.

'We know it's you @lindyklim. So just stop with the trolling... You're a grown woman and stop being so disrespectful,' he wrote in comments that were widely reported at the time.

Desiree also made similar claims, writing: 'If @michaelklim1 doesn't mind and he is their father and the children don't mind why should anyone else especially since @lindyklim has been blocked for trolling.

'Let's get one thing straight, making a fake account and trolling is never OK and these comments are not the first. It's constant and inappropriate. Not to mention the emails!' 

At about the same time, Lindy had announced she was pregnant with her then-new partner Adam Ellis, from whom she has since split. 

She has never publicly addressed Michael's claims of anonymous trolling. 

Lindy and Michael share children Stella, 20, Rocco, 18, and Frankie, 15.

She also shares daughter Goldie, eight, with property developer Adam, whom she separated from in October 2024 after six years of marriage.