They finally reunited earlier this year after his drink-drive arrest.
But Ant McPartlin and Declan Donnelly left Britain’s Got Talent in tears on Saturday, after their amazing connection was revealed by a jaw-dropping illusionist.
It came as Ant also made a hilarious jibe about Dec’s wife Ali Astall, leaving the star shocked as he quipped the illusionist X could be his spouse in disguise.
Incredible: Ant McPartlin and Declan Donnelly left Britain’s Got Talent in tears on Saturday, after their amazing connection was revealed by a jaw-dropping illusionist
Viewers were unsure what to expect following X’s arrival on-stage, as he began the audition with a monologue about lifelong connections.
Following Ant’s joke that the speech was about his lifelong friendship with Dec, it was revealed would be putting that connection to the ultimate test.
Taking to the stage, the pair were asked to sit on either side of X – and in a spooky twist the pair were sat in the opposite to order to how fans have come to know them.
Shell-shocked: The presenting pair took part in an incredible audition which tested their 30-year friendship
This is it: After X took to the stage, he explained he would be testing Ant and Dec’s friendship, and asked them to sit with their eyes closed
Jaw-dropping: The audience were stunned to see that Dec and Ant appeared to feel a sensation of touching the other’s arm
After closing their eyes, X slowly touched Ant’s arm, before asking Dec to raise his hand if he felt someone touch him.
Stunning the audience, it seemed the host did feel the touch, and vice versa as X went onto touch Dec’s arm in the same way.
In a shock end to the audition, Ant and Dec were both asked to draw an image on the board, with their eyes still closed.
Incredible: The audition then came to a shock conclusion, as Ant and Dec were asked to draw the same image with their eyes closed
Changed: As X turned around the images, it was revealed they were exactly the same, and when turned upside down, they resembled the year 1989 – which was the year Ant and Dec met
After the two images were revealed, a gasp could be heard around the theatre, as the sketches drawn by the presenting duo were exactly the same.
As X turned them round, the squiggles resembled the year 1989 – which of course was the year Ant and Dec met.
The audition left the judges, audience – and viewers- completely shell-shocked, as many admitted the evidence of their emotion left them close to tears.
The performance came in yet another night of stellar talent, which came after singer Susan Boyle made an incredible return, almost 10 years to the day since her original audition.
A night of chaos kicked off with the hilarious tambourine player Gonzo from Japan, who David branded ‘the next Susan Boyle.’
After a sensational audition – which saw him hit his face repeatedly with a tambourine in an energetic routine – he stormed through to the next round with four yeses.
And following Susan’s incredible performance to kick off the show, BGT saw the debut of ‘the new Susan Boyle’ – Glaswegian singer Kerr James.
The 12-year-old revealed he only started singing because of his idol Susan, telling the judges: ‘I used to watch that first audition on repeat.’
The youngster belted out Try A Little Tenderness by Otis Redding, which caused Dec to comment: ‘He just becomes someone else,’ while Ant added the performer ‘took his breath away.’
But it wasn’t all success in the auditions, as Clacton mini-bus driver Greg earned four buzzers for his performance with puppet Mr Bones.
However, in contrast, tonight’s show saw the judges on the edge of their seats as they watched daredevil Jonathan Goodwin set himself on fire during his death-defying audition.
The act, who has also performed the same stunt on ITV show The Next Great Magician and as a guest performer on America’s Got Talent, left everyone floored as he hung upside down in a straight-jacket before setting himself alight.
He then attempted to free himself from his constraints before becoming seriously injured by the flames.