No details were given through official channels, but geographical incompatibility seems to have played a role, according to a People source.
The couple, who got engaged in February 2008, announced in June they were "taking a break," with Bilson appearing in public without her engagement ring.
Now, we assume Rachel will never see this post (she recently told InStyle UK that she "would never want to read or hear anything about myself. It is poison.") but nevertheless, with looks like this, we doubt she'll have trouble getting a date the minute she's ready.
-- Christie D'Zurilla
Photo: Rachel Bilson and Hayden Christensen in "Jumpers," the movie that brought them together. Credit: Michael Gibson / 20th Century Fox