The actor is happily married right now but has a string of high profile ex-girlfriends including Hollywood actress Isla Fisher, former Hear'Say singer Suzanne Shaw and actress Anna Friel.
When asked if he'll discuss his ex-lovers in the house, he said: "I hope that I wouldn't do anything that would be seen as being ungentlemanly.
"I've bumped into all of my exes over the years. I went to my hairdresser's wedding and there were four or five of my exes there with their now-partners. The funniest one was Isla [Fisher] because I'm a massive Sacha Baron Cohen fan. I was a big Ali G fan, way back when he started on the 11 O'Clock Show – long before they got together, and I regularly quote Borat!
"So when I bumped into her, there was the awkwardness of bumping into an ex you've not seen for a few years and meeting the new partner,
but I also wanted to say 'Listen mate, I think you're bloody amazing.' It was great to meet him.
"Anna's mum and dad I've kept in touch with and we've just wished each other a happy new year, so things aren't as bad as people may think. With all of my relationships, we had a very public get together, relationship and break up."
CBB airs nightly on Channel 5.