Their fight in the latest task may be complete, but the duo - as their alter egos - continue their war of words.
Cowboy Callum is in the diary room talking to Big Brother about Dexter The Devious.
He tells Big Brother: “The reason I am so strongly disliking Dexter is because when he pipes up on his opinions of the house and of me, he subtly puts me down. He uses little psychological words and tricks...Dexter sees me as competition and as an opponent that he can beat. He is constantly chipping away.
"I am trying not to be beaten…I don’t like him..there is going to be fireworks, a storm is brewing.”
Meanwhile, Dexter The Devious is talking in the bedroom with Hotshot Hazel about the house mentality.
Dexter The Devious tells her: "Not being condescending but I just think we are made of different stuff…I am used to being on my own.”
Hotshot Hazel replies: “To be surrounded with such a childlike mentality and aura, it is sometimes frustrating. I would love now to read a big massive book on brain science or neurology. Something in depth that I could actually put some brain cells into.”
Big Brother 2013 airs tonight at 10PM on Channel 5.