Did Michael Buble cheat on Emily Blunt?

Emily Blunt is best known for her role as the bitchy assistant in The Devil Wears Prada. While her character deserved to have a cheating boyfriend, Blunt herself is probably much nicer. Unfortunately for the actress, her boyfriend, singer Michael Buble, reportedly has been unfaithful.

A 28-year-old beauty named Tiffany Bromley has told the Globe that she and Buble have been having an affair for more than ten years – including during Buble's relationship with Blunt. She has even produced cameraphone pictures of Buble sleeping shirtless that seem to back up her story.

Bromley said, "Michael is a cheater and a rat. We've made mad, passionate love a couple of times since he and Emily have been together. The last time was August 17 in the apartment they share in Vancouver." But even though he's a rat, Bromley says Buble scores "an 11 out of 10" for his lovemaking.

Buble is said to be a bit kinky as well. Bromley claims he asked her to participate in a threesome. "I told him, 'No way!' He said, 'Don't knock it till you've tried it. You don't know what you're missing,'" says Bromley.