HEARTBREAKING: Loose Women star Coleen Nolan makes SH0CKING ANNOUNCEMENT about her sister’s DISGUSTING actions that have HAUNTED her for years

Loose Women star Coleen Nolan has revealed which of her sisters had an affair with one of her past boyfriends, as she opened up on the ‘shocking and hurtful’ betrayal.

The singer, 60, who was previously in band The Nolan Sisters alongside her siblings, opened up to her fellow ITV panellists as they discussed cheating in a show segment.

Coleen shocked her co-stars Jane Moore and Mariella Frostrup when she made the admission while discussing upcoming scenes on Coronation Street.

Fans of the soap have watched on this week as Sue Devaney’s Debbie Webster discovered that her brother Carl, played by Jonathan Howard, had been sleeping with his sister-in-law, Sally Carman-Duttine’s Abi.

Debbie was left with a dilemma as she struggled to know what to do with the information, finally giving Abi an ultimatum: to be honest, or she would tell everyone.

Coleen then recalled the time that she found herself in a similar situation, when her sister Maureen, 71, told her one of her sisters had been involved with her boyfriend.

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Loose Women star Coleen Nolan revealed which of her sisters had an affair with one of her past boyfriends in the show segment

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Coleen, who was in band The Nolan Sisters with (right to left) Bernie, Maureen and Linda, admitted she was told about the affair by one of her siblings

She explained: ‘I was seeing somebody, living with him for two years and then my sister ended up being with him.

‘Maureen told me, and I knew anyway. I was deciding at the time that I didn’t want to be with the guy but it was still shocking and hurtful.

‘We never fell out because I thought he wasn’t worth losing my sister over, and also, a bit snide of me, I loved sitting back and seeing how long it would last, and it didn’t!’

She then revealed it was her late sister Bernie, who passed away in 2013 when the breast cancer she was battling spread to her brain, lungs, liver and bones, that was involved.

Kaye, 62, asked Coleen whether she felt ‘betrayed’ by her sister, or if she placed the blame more on the boyfriend caught in the middle.

Coleen added: ‘I was more betrayed by probably my sister at the time.

‘We grew up as six girls and we had the same taste in guys, the difference is with me is that it was fight to the death for the guy but when he picked who he wanted, that was it.

‘Obviously, it went a bit further than that with those two.’

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Coleen shocked viewers as she revealed one of her sisters told her about the cheating boyfriend, who had been seeing Bernie behind her back

The singer admitted that she finally confronted Bernie in their dressing room, admitting that her sibling ‘knew she had learned the truth’ as ‘soon as she saw her’.

She continued: ‘I remember seeing her for the first time, we were working together, sharing a dressing room. I walked in and knew she knew.

‘I just said “Can I borrow that lipstick?” I just thought, let them get on with it.’

Coleen said she felt it was only right for Maureen to inform her of what was going on behind the scenes, even if it was ‘hurtful’.

‘It was right for her to do, it would’ve been really hard for Bernie to face me,’ she added.

‘Maureen telling me gave me time to process it before I kind of met up. We were fine after that, honestly. Absolutely fine. And they didn’t last anyway.’

It comes after Lorraine left the Loose Women panel open-mouthed with an outrageous comment about her sex life with husband Steve Smith – and Kaye Adams gasped ‘I’ve never heard you speak like this before!’

The 65-year-old, who has been married to Steven since 1992, appeared on the ITV show to chat the the ladies about her important Change + Check campaign – which promotes breast cancer awareness.

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Lorraine shocked the Loose Women this morning when she made an outrageous comment about her sex life with her husband

Wednesday marked the campaign’s first ever ‘check your boobs day’, which will now fall on October 1 every year, and encourage people to find their ‘normal’.

‘It’s about knowing our normal. Checking yourself. it’s about knowing your normal,’ she told Kaye, Coleen, Mariella and Jane.

Kaye said: ‘So the campaign rolls on, today to be recognised by the government as national check your boobs day. ‘

‘Which is great, don’t just check your boobs once a year, that’s daft, once a moment, every two weeks,  it’s really up to you, It’s about your normal though. some people do have lumpy boobies,’ Lorraine replied.

She added: ‘It’s whatever suits you, for me I do it once a month, but my husband checks my boobies quite regularly.’

A shocked Coleen gasped and said to the live audience: ‘She’s just showing off!’

Loose Women airs weekdays from 12:30pm on ITV1 and is available to stream on ITVX.