Codependent New York City siblings Sam (Tom Cavanagh) and Gray (Heather Graham) fall for the same woman (Bridget Moynahan) in this tepid romantic comedy. Graham is adorable as a heretofore heterosexual ad exec, but her quirky-neurotic charm can't rescue hokey lines like ''She's cow-jump-over-the-moon in love with you!'' EXTRAS In a behind-the-scenes featurette, Gray Matters writer-director Sue Kramer reveals that her gay sister inspired her to make the film. Sadly, it's the only intimate moment in this three-minute glorified trailer. C+

