Coleen Nolan has revealed which of her famous sisters once had an affair with her boyfriend. The Loose Women star, 60, was back on the panel of ITV’s lunchtime chat show alongside anchor Kaye Adams as well as fellow panellists Mariella Frostrup and Jane Moore when the ladies were discussing a Coronation Street storyline.

Earlier this week, fans of the world’s longest-running TV soap watched as Debbie Webster (Sue Devaney) discovered her brother Carl (Jonathan Howard) had been sleeping with his sister-in-law Abi (Sally Carman-Duttine) and was left in a dilemma of what to do about it.

Coleen, who shot to fame alongside her many sisters as part of The Nolans in the late 1970s and achieved hit singles with I’m In The Mood For Dancing and Gotta Pull Myself Together, recalled a time that she had found herself in a similar situation when her sister Maureen informed her that another sibling had got involved with her boyfriend.

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Coleen made the confession on Wednesday’s Loose Women(Image: ITV)

She began: “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!”

Kaye then asked Coleen whether she felt she had been more ‘betrayed’ by the sister who had got involved with her boyfriend, or the man himself.

She 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 said it was her late sister Bernie who had ‘betrayed’ her but insisted that everything turned out okay between them(Image: PA)

Coleen noted that the confrontation between the pair came at a time when they were working together, and could tell instantly as soon as she clapped eyes on her sister in the dressing room that she knew she had learned the truth.

She added: “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 the admitted that it was the ‘right thing’ for her sister Maureen to do by informing her, and then decided to reveal the identity of the sister in question.

“It was right for her to do, it would’ve been really hard for…” Coleen paused before admitting: “Bernie, I’m gonna say it was Bernie, to face me.”

Bernie served as lead singer of The Nolan Sisters and also became known for her role on The Bill as well starring in the musical Blood Brothers but died in 2013 at the age of just 52 following a battle with cancer.

Coleen added: “It would’ve been hard for Bernie to face me and 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.”