The title explains the problem in this risky film. Simply put, two women meet while waiting for their respective boyfriends who, they quickly ascertain, is one and the same, a New York actor. They lie in wait for him in his loft as he returns from a job in LA. First one, then both women proceed to impel him to reveal and explain his deception and insist on forcing him to identify truth and meaning. With the exception of one sexual scene in which both actors retain their clothing but which required 14 edits to get it down to an R rating, the action largely consists of changes in the wind of the dialogue, with segues often provided by telephone calls to and from unseen characters. So it goes for 90 minutes.
For the most part, the characters command attention, making the 90 minutes pass without dragging. This essentially comes off like a staged play, not a flaw in itself necessarily but the filmmaker invested energy in the concept and characters, not in actual filming techniques that might better define this as a cinematic art work apart from the drama. The setting is a stunning loft that holds attention as much as the characters; it adds conceptual commentary and allows for some interesting blocking-but a stage play could have replicated it and made similar use.
Robert Downey, Jr., gives a remarkable performance as the guy lost in his deceptions. Natasha Gregson Wagner completely owns her part and takes it to the core and back. The motivation of Heather Graham's character is not always clear though what her character does and says always propels quality changes in the action.
The bottom line: this is a high concept film, smart and creative, but it belongs more to the art house crowd and never breaks free from "Indie" conventions.