It was a joke.
Cameron is straight as a die, with a lovely wife. And had more than a few upper class girls in his ‘Bullington Club’ days at Oxford.
I wouldn’t be so sure. The rumours about him are circulating more widely. More than one politically motivated narcissistic gay has taken a wife and had kids for cover while getting the occasional pink floyd up the buffy on the side.
Obama, Graham, Mark Foley and the guy with the wide stance come to mind immediately.