EastEnders fans were sent into meltdown on Monday night, as they were introduced to one of the cameramen.
They learned that the crew member was the real-life partner of a Walford legend, with many unaware the pair worked together.
Marc Humphreys helped film the show hosted by Stacey Dooley, and it was quickly revealed he is with none other than Natalie Cassidy.
Natalie has played Sonia Fowler, formerly Sonia Jackson, on the show since 1993 when she was 9 years old.
She's remained on the BBC soap ever since, despite the odd break here and there.
But fans had no idea her fiancé Marc was on the show behind the scenes.
So when he made a cameo during the Secrets From The Square spin-off on Monday, fans were stunned by a revelation.
As he appeared on camera, actor Adam Woodyatt, who plays Ian Beale, identified who he was.
He joked to host Stacey: "We can't stand Marc!"
It's then that he said: "We have to be nice to him because he's with Nat."
A stunned Stacey had no idea they were together, and asked: "Are you? You're Sonia's husband?"
But she wasn't the only one surprised, with many confessing they had no idea he worked on EastEnders.
One viewer tweeted: "Omg Natalie's husband works on set iconic !!! #SFTS."
Another said: "OMG! Natalie's husband work's on EE wth the cameras. #EastEnders #SFTS."
It comes after filming recommenced on the set on Monday, with some cast returning.
Jake Wood, Danny Dyer and Milly Zero were some of the stars joining Adam back on the famous location.
EastEnders airs Secrets From The Square on Mondays at 8pm, and classic episodes on Tuesdays at 7:30pm on BBC One.
