Danny Two Phones (S01E03)

Darby unexpectedly bumps into an old boyfriend and his current girlfriend, prompting her best friend Sara to persuade her to ditch a tedious family commitment with her long-term boyfriend, Jim. They head to a coworker’s rooftop party instead. After spending the evening obsessively checking out her ex's new partner online, Darby ends up meeting an overly enthusiastic guy who's recently had his heart broken.