Rachel Bilson: I Fall For Co-Stars

Rachel Bilson says it's hard not to fall in love with co-stars.

The former O.C. star, who met her current boyfriend Hayden Christensen on the set of Jumper, says falling for someone on-set is like an office romance.

She said: "They say don't date your co-star, but that's who you're around.

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Rachel previously dated Adam Brody while they both starred in teen drama series The O.C.

But she says she's moved on, adding: "I have someone really great. Someone who can make me laugh - that's always what comes first.

"It's the best to be able to really, like, truly laugh with someone like they're your best friend, you know?