David Walliams and Lara Stone

David Walliams and Lara Stone

David Walliams admits his wife Lara Stone is "jealous" of his 'bromance' with Simon Cowell.

The 'Britain's Got Talent' judge - who has struck up a firm friendship with the music mogul during his time on the panel of the ITV1 show - joked that he has even started forcing the Dutch model to wear a mask of Simon's face in the bedroom.

He told BANG Showbiz: "Lara is jealous because every time I come back from work I say, 'Guess what Simon did today?' so she actually doesn't really like it. Also, in our wedding photograph I've taken her head away and replaced it with Simon's.

"Sometimes when we get into bed at night I say, 'Is it OK if I call you Simon?' For the first few times she let me, but then she was wearing the mask..."

However, Simon seemed less than thrilled with the duo's relationship, likening the 'Little Britain' comedian to his family's pet "dog".

Speaking at the launch of 'Britain's Got Talent' yesterday (22.03.12), he said: "It's been a very entertaining relationship.

"Rather like when my mum and dad had a pet daschund dog and as it got a bit older it used to occasionally hump my leg. It used to be like, 'Oh go on, just go away'. That kind of annoyance. You know the sketch he does on 'Little Britain' - the Prime Minister and the gay assistant? It's like that."

David quipped: "And Simon is the gay assistant."

'Britain's Got Talent' returns to ITV1 tomorrow (24.03.12) at 8pm.