Now we might have a reason for Peter Facinelli and Jennie Garth's divorce, because let's admit it came as a huge shock when they announced it yesterday! New details emerge that suggest Peter Facinelli was cheating on Jennie Garth and this is why they had to divorce. One source said: “Peter had been seeing another woman for quite some time…They tried to make it work for the sake of their children and Jennie played housewife for as long as she could but finally had enough.” Apparently, Peter met the mystery women while filming "Twilight: Breaking Dawn" in Vancouver. The source said his wife suspected something was up, quote: “Jennie knew. As a lot of couples do, they simply grew apart." Peter and jennie were married for eleven years, and have three kids. There's no confirmation yet if he and this mystery woman are still seeing each other.