Jake Gyllenhaal was all business other than his footwear — sandals with socks — on the set of Love and Other Drugs in Pittsburgh, PA yesterday. The actor isn't letting himself go after training for his role in Prince of Persia as we saw from his sleeveless wardrobe last week, but this time he kept his toned biceps under wraps. Reese is a few short hours away on her own movie set in Philadelphia, but the two lovebirds are no strangers to popping in to visit each other while they're hard at work.