The former publicist and Keeping Up With The Kardashians regular has hinted we'll be seeing a different side to him in the house than the one we're used to from the E! series.
Speaking about the public perception of him, he said: "I'm not as nice as I am on the show, because those are my close friends. I think the real me is a lot stronger and less kiss-ass – I'm actually the opposite, I'm a nightmare. If I see something I don't like, or something that bothers me, I can't hold it in."
We are SO preparing for fireworks!
Jonathan admitted he does have a tendency to "whine at times", saying: "I can whine a little bit, it's just my natural habit. Hard sheets, hard pillows. Things like that bother me."
As for what BB can do to annoy him, it's simple. "Deprive me of sleep. My energy gets off, and I get grumpy."
CBB airs nightly on Channel 5.