Hayden Christensen Misses Rachel Bilson

Chain Smoker Hayden Christensen looks a little lonely for rumored current flame and co-star Rachel Bilson as he puffs away at his cancer stick and sends text messages on his Blackberry.

Hayden, 25, was in between takes on the set on his new film Jumper in Los Angeles on Tuesday afternoon.

Just last week, Hayden and Rachel were spotted feeding each other lunch and picking up groceries together.

For 10+ pictures of Hayden chilling on the set of Jumper, CLICK HERE!