Rachel Bilson and Hayden Christensen Break Up

Rachel Bilson and Hayden Christensen, who decided they were taking a break back in June, have officially ended their engagement, reports say.

"Yes, the engagement is off," Bilson's rep confirmed, without elaborating.

Distance was reportedly one of the main reasons for the split.

With the former OC star based primarily in L.A., and Christensen living in his native Canada, "It just wasn't working out," says a friend of the actress.

Rachel and Hayden made such a cute couple ...

Now Bilson, who will appear on How I Met Your Mother a second time when the CBS comedy premieres in September, is "focusing on her career, spending time with her family and just moving forward," adds the friend.

The pair met on the set of Jumper in 2007, and got engaged the following year. We wish them both nothing but the best in this difficult time.