Boyzone singer Ronan Keating was married to Yvonne Connolly for 12 years - until he had a steamy affair with one of his backing dancers.
Ronan embarked on an illicit relationship with Francine Cornell, who was the spitting image of his wife.
He had three children with Yvonne, Jack, 20, Missy, 18, and Ali, 14, and they had been married since 1998.
Yvonne said that she found out about the affair when she checked heir phone bills, just before they were supposed to be moving into a new house together.
She confronted her husband's mistress face to face in a dramatic showdown in a hotel room - and the police were called.
The two women ended up bonding and both felt they had been wronged by Ronan.
Appearing on Brendan O'Connor's Cutting Edge, Yvonne said: "We were about to move into our new house. So, no, I didn’t see it coming at all."
"I did get in touch with the girl involved, and I arranged to meet her in a hotel - my hotel, which she did."
"I just needed answers. I just needed the truth, and I needed to make sure stories collaborated. It was very hard to figure out who you can trust. So this was the answer to it. I was going to meet this girl, a quick 20-minute conversation, and we’d be done and dusted."
"And in fairness to her, she came and met me. But the 20-minute conversation turned into a couple of bottles of wine.
"After a few hours I realised she needed it as much as I did and I know it sounds very dramatic, but she was as much as a victim as I was. I think we both got something from it."
She said they even hugged each other goodbye and wished each other well.
"When I look back, this is what it all boils down to: it was basically two girls in love with the same boy who over a five-hour conversation realised that that boy was not who we thought he was", she explained.
But the police turned up at one point to check on Francine's wellbeing after her mum panicked when she hadn't heard from her.
Yvonne and Ronan divorced in 2015, but Ronan maintained his affair was not the only reason they split.
He hinted that they had marital problems before the affair, and also claimed he had no regrets.
Opening up in a detailed Facebook post in 2016, Ronan wrote: “There is a lot more to it than an affair and obviously it was broken well before then.
“There are always two people in a relationship and if it’s not working there’s more than one good reason.
“I will not stand for complete misrepresentation of my truth and my heart anymore.
"After six years I draw a line.
"There is a lot more to my situation than people will ever know & that's the way it should be.
"But there are always two people in a relationship and if it's not working there's more than one good reason for it.'
Yvonne and Ronan separated in 2010 and their divorce was finalised five years later.
He also confirmed he had been misquoted in an interview and insisted he did not wish to apologise to his wife.
A Daily Telegraph interview quoted him as saying: "Nobody should have an affair. If you're man enough to have the balls to go home and say, 'Sorry, this isn't working anymore,' that's the ideal situation, isn't it?
"But we're weak. We don't do that. So yes, I hurt people and I am sorry for that hurt, but the outcome is I found Storm and I'm very grateful. But I'm saying sorry."
However, Ronan contradicted the quotes, writing: 'Not once did I say I was apologising to my ex wife or saying sorry for the affair.
"I said I was sorry for all the hurt it had caused, to which I truly am."
Ronan emphasised that he has now found happiness with wife Storm Uechtritz, who he married in 2015.
They share a two-year-old son, Cooper, and Storm is pregnant with their second child.
