Bilson & Christensen Engaged?

Page Six is reporting that Rachel Bilson and Hayden Christensen are engaged! A Page Six spy spotted Bilson on a Virgin America flight from LA to JFK Monday night with her mom. When a man sitting in front of her saw a ring on her finger and asked if she was married Bilson replied, "I'm not married yet, just engaged. I know I look like I'm 15, but I'm actually 27."