The singer spoke about the group during an interview on BBC Radio 1's Chris Moyles Show.
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© Rex Features / David Fisher
Cole was hesitant when asked by Moyles when the five band members were last all together in a room, finally admitting it had been "recently".
Of their temporary split, she said: "What happened was it had been seven years, consistently non-stop touring, album after album, and just as women we needed that space to grow as people.
"It's been almost three years, I believe, so watch out!"
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Musing on the group's upcoming ten-year anniversary, Cole added that filming the 'Sound of the Underground' video "feels like yesterday".
Cole then asked Moyles whether he had seen Kimberley Walsh on stage in Shrek The Musical.
In response to his admission that he hadn't, she said: "I advise you do, it's a great show. She's amazing."
> Cheryl Cole for autumn arena tour
Listen to Cheryl Cole's new single 'Call My Name' below:
