Apparently 'Luke and Bex' said that Charlie was pretending to be "oh..i'm lovely me like" for effect (basically got him to a tee) and he didn't like it.
I think he's having general withdrawals from the attention because he's run out of 'cheeky chappy' skits to perform and stuff.
And also his attempt to steal Sophie off Rodrigo didn't work.
He's just a sad little man really.