The 37-year-old singer apparently can't get enough of reality shows, so much so that he bores his friends to death by rabbiting on about them.
Gary, 40, told the Daily Star, 'I stay at Rob's house now when I go out to LA and I have a great time.
'But he's hooked on reality telly so he only ever wants to talk about Big Brother.'
Big Brother is set to return in the UK on Channel 5 and Robbie spoke out last year after it was announced that Channel 4 had decided to drop it.
He said, 'I love Big Brother and I have to say to the general population – you've got it wrong. I know you've fallen out of love with it but I don't want it to go away.'