Rachel Bilson And Hayden Christensen Back Together?

It seems Rachel Bilson and Hayden Christensen are giving the relationship another go.

The couple, who met on the set of Jumper in 2007, broke off their engagement back in August.  But it’s red-light green-light for these two, as they were spotted leaving Bilson’s Los Feliz, CA home last week.  Bilson was also spotted buying a ring (perhaps one fo the engagement kind?) in Beverly Hills yesterday.