Close Quarters (2006)

Every Sunday, a group of close friends gets together for a backyard barbecue. But one day, Smitty decides to bring along his new girlfriend — and everyone is shocked to discover that she looks strikingly similar to Samantha, another friend who died several years ago. As the afternoon progresses, each of the friends must not only deal with the new addition to their little circle, but confront the ghosts of their own past relationships — resulting in unplanned revelations.