Slightly single

A heat wave in Manhattan is enough to drive a girl crazy, and for Tracey Spadolini, a 24-year-old New York transplant who's been "left behind" for the summer, there's even more to sweat about. Her Slightly Significant Other, Will, will be returning from summer stock in September, to pick up where they left off. (Or will he?)But, in the days after Will's departure, Tracey decides it's time for a reality check. Her un-air-conditioned East Village apartment is a dump, her entry-level ad job sucks, her thighs don't seem to be getting any thinner, and Will seems to have dropped off the face of the…