Colin Firth claims his steamy threesome in new movie ‘Where The Truth Lies’ felt 'normal.'

The handsome star said the week on set “solidly shagging” Kevin Bacon and a string of beauties didn’t bother him.

He explained: “Somehow, three of you tends to make it more normal. You talk about safety in numbers, really."

“I showed up for filming and the week was taken up with solid shagging with Kevin and various women."

Firth added to Britain’s Empire magazine: “As actors we’re asked to do all kinds of things that are not usual or normal. You pretend to kill and torture people – this was one more weird thing you have to do.”