Peter Sarsgaard got a new roommate to prepare for his role as a marine in the Gulf War drama Jarhead.
The actor plays Jake Gyllenhaal's sniper partner in the film adaptation of Anthony Swofford's memoir, so he decided to spend time with him in real life.
"I figured if I couldn't be around my girlfriend, I would settle for her brother," said Sarsgaard, who's dating Maggie Gyllenhaal.
'Jarhead' actors stick together
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