Lydia hasn't revealed the identity of her lover to all the housemates yet and claimed that she didn't want to name him in case people in the house use her to get extra attention in the media.
"He's stepped out of the limelight. He doesn't do anything anymore. [Big Brother] is about me and not him," Lydia told her housemates.
"I just want to be the same as everyone else. I don't want to be taken in any different way."
Speaking about her decision to keep it secret, she said: "People will think, 'Ooh, I'll get in OK Magazine, I'll be your friend'."
She added: "He is such a normal person. It is not even like going out with a celebrity. He is just a normal, normal guy. But he is, he is so normal. He is so talented, but he would just be chilling with us if he was in the house."
Scott Mason downplayed the housemates' expectations about Louisa's boyfriend, commenting: "She did say the name once but I didn't recognise it. So don't be too excited."
Scott-Lee is the brother of Steps singer Lisa and he was a member of boyband 3SL, who had hits with 'Take It Easy' and 'Touch Me, Tease Me'.
He also appeared in the reality shows Pop Idol, Totally Scott-Lee and was previously married to Liberty X singer Michelle Heaton.
