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The Chelsea footballer was spotted kissing his former wife at her 28th birthday party on Friday, and he has told his friends he intends to remarry her.
They apparently spent the night together after the Geordie beauty's party at London's Sanderson hotel, which is said to have cost £20,000.
Fellow guests included Cheryl's Girls Aloud bandmates Nicola Roberts and Kimberley Walsh and her pal from the Black Eyed Peas, Will.i.am.
According to reports, Cheryl - who looked pretty in a Stella McCartney dress and new blonde hairstyle – started secretly dating Ashley again three months ago.
They resumed contact long before her unsuccessful stint as a judge of the American X Factor, covertly meeting at his brother Matty's house.
Then after she returned to Britain, the pop star spent the night at their former marital home Godalming, Surrey.
A source told The Daily Mirror: "They got back together because they want children and they could not live without each other."
All the news as Duchess Kate's due date draws close...