Perez has been an attention seeking nightmare, but he also told Keith he has done it to wind the others up at times. Katie said in the diary room that she was going to drive him out and she is now winding him up, which is provoking him to be more attention seeking and outrageous, which is making Katie into a bully. The reason that Nadia talks to Perez is because what ever he does, he is still better to be around than Katie. She does not like Katie and she does not do what other people tells her to do. Never does Keith or Patsy. Patsy is really quiet and stays out of trouble, being friendly with everyone....Perez has exposed Katie's temper and exposed her weaker side, nearly brought her to tears, Patsy calmed her down. And Perez was obnoxious coughing in the night, basic manners if you have a cough and other people in the room, you go out..you don't wake people up. That is why everyone was angry with Perez then, and that is why Katie lost it, because Perez was unapologetic...Alexander got a warning for his language, and rightly but I know in the US he most probably would not have.Perez was mocking Alexander after disturbing his sleep...it was arrogant. Even Keith had had enough of Perez at that point...