Kevin Federline was unaware his ex-wife Britney Spears had filed for divorce - until he heard the news on the radio. According to the dancer's new girlfriend Nicole Narain, Spears failed to tell Federline when she filed for divorce from Federline citing irreconcilable differences last year (06). Narain tells Britain's Closer magazine, "Kevin didn't even know she'd filed the divorce papers until he heard it on the radio."