Ant McPartlin's ex-wife Lisa Armstrong has split from her actor boyfriend Grant Kilburn, according to reports.
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The Strictly make-up artist, 49, and Grant, 34, are said to have parted ways last month, just weeks after friends claimed she was 'happier than ever' in her new relationship.
Of their split, a source told The Mirror: 'It’s very sad but it wasn’t to be.'
Daily Mail has contacted Lisa's representatives for comment.
Just weeks ago, insiders said Lisa had found a renewed sense of happiness and energy following her marriage breakdown to Ant, 50, in 2018.
A source told the publication at the time: 'She's been so used to being in relationships where she played second fiddle.
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Ant McPartlin's ex-wife Lisa Armstrong has split from her actor boyfriend Grant Kilburn, according to reports
The Strictly make-up artist, 49, and Grant, 34, are said to have parted ways last month, just weeks after friends claimed she was 'happier than ever' in her new relationship
'This time, she’s number one. She’s taking it slow, she doesn’t want to get hurt again – but she’s being treated like a princess and her new man cannot do enough for her.
'His life revolves around hers and he adores her - and he tells her so all the time. She's doing so well with her career, she’s come into her own right and he’s encouraged that.'
Their romance was revealed by the Daily Mail back in December that Grant and Lisa quickly hit it off after being introduced by Stacey and Kevin Clifton following one of their performances.
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Stacey and Kevin, who share a two-year-old daughter, are currently starring in the stage production 2:22 A Ghost Story, which has been touring the UK since August 2025, and features Grant as a fellow cast member.
Sources revealed that after the show, the couple introduced Lisa to Grant, who is 15 years Lisa's junior.
A source told the Daily Mail at the time: 'Lisa and Grant have really hit it off - and it's put the smile back on her face.
'Their relationship is in its early stages and, at the moment, they are keeping it low key. Lisa went through a painful and very public split with Ant and she doesn't want to get hurt again but she's not thinking about that right now.
'They are just enjoying spending time together. Grant lives in Kent but has been staying with Lisa when he can. They've both been very busy - Lisa with Strictly while Grant has been touring the country.
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They met after Lisa - who heads the team that puts the glitz and glamour into Strictly Come Dancing - went along to watch Stacey Dooley and Kevin Clifton perform together in a play
Grant starred in 2:22 A Ghost Story alongside Stacey and Kevin (pictured)
Lisa was previously married to TV presenter Ant, 50, for 11 years (both pictured on their wedding day in 2006)
She then found love with James Green, a sky electrician, 42. However, In 2023, they split and he moved out of her home
'At the moment they are taking it one day at a time but it's great to see her happy again.'
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While her showbusiness career has continued to thrive, Lisa has had to endure a series of setbacks and heartbreaks since her acrimonious split in 2018 from Ant famed for his double act with co-presenter Dec Donnelly.
In 2023, she split from her boyfriend James Green, a Sky electrician, 42, and he moved out of her home.
In the same year, a fire ripped through the £5million home she bought in Chiswick after her divorce.
Friends have told how Lisa herself has battled to overcome dark times after her split from Ant.
The couple's romance began when they were teenagers, and they had been together for more than 23 years.
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Lisa met Ant on a Smash Hits tour in Newcastle in 1994 when she was in a band called Deuce, which performed alongside him and partner Dec, who were reaching new TV and music heights as PJ & Duncan following their stint on Byker Grove.
They were together for more than 10 years before Ant proposed to Lisa on holiday in Dubai in 2005.