According to a bitter ex-flame’s tirade, Michael Buble must be stopped! Ex-model Tiffany Bromley (who is now a wig-maker…question mark?) alleges that she dated the singer on and off for a decade starting in 1997. And if I learned one thing in arithmetic…that means he was cheating on former girlfriend Emily Blunt! But that isn’t all this ex had to spill on Buble, who recently got engaged to Argentine soap star Luisana Loreley Lopilato de la Torre (god bless you!). She claims that he would smoke up to three joints a day and enjoying constantly bedding other women.

“Michael saw himself as a real ladies’ man who could schmooze any women into bed, and had done on tours. He told me I was too uptight and needed to loosen up,” she said, according to News.com.au.

She says when she first met Buble, he was completely different and that fame changed the silky-voiced singer.

“He often said to me, ‘I’m the best living singer there is’,” she said of Buble, pictured attneding the NRJ Music Awards 2010 at Palais des Festivals on January 23, 2010 in Cannes, France.

What do we think, truth or rumor? It sounds like either this celeb has a major dark side or someone has a major grudge.