Lee Ryan used to break out in laughter during "EastEnders" scenes in disbelief that he was on the show.
The Blue singer was "shocked" to find out he could act when he landed the role of Woody Woodward on the BBC One soap, and while starring in scenes with big-name cast members such as Steve McFadden (Phil Mitchell) he couldn't help but have a little chuckle to himself.
He said: "I've had a few of the cast texting me asking if I'm going to come back and I said, "I don't f***ing know."
"But yeah, maybe. I think people were quite shocked I could act, and to be honest I was quite shocked, too.
"I loved the whole cast and it was a privilege to work on.
"I'd be doing scenes with Phil Mitchell [Steve McFadden] and I would find myself laughing and saying, "We're on "EastEnders"."
"Most of them have been there half their lives, so they'd look at me and be like, "Alright mate," and walk off."
Lee also starred opposite Danny Dyer on the soap, and the pair were well acquainted during the singer's first scene when the "Football Factory" star accidentally whacked him in the jaw.
He added: "He was amazing. In our first scene we solidified our relationship by doing a fight scene and he accidentally clocked me in the jaw - he may have meant it."
While the 35-year-old singer is unsure whether he will be making an Albert Square comeback anytime soon - after departing the soap in June 2018 - he is well aware of his next project, producing a horror movie.
He added to OK! magazine: "In the summer I'm producing a horror movie called "Mary" with a £1.5 million budget, so that's my focus at the moment."