Former Westlife star Brian McFadden has branded his failed marriage to pop singer Kerry Katona a "sham" after learning she was cheating on him. The Irish crooner feared rumours his ex-Atomic Kitten wife was seeing her old flame, male model DAN CORSI, were true, but believed her early denials of infidelity. He recalls, "I found out six months before Kerry and I split. She always told me that nothing was going on. But yes, it was true. I'm still devastated. "I can't believe what she did. It makes our whole marriage a sham." The couple split in 2004.