It's half-way nostalgia style fetish, half-way sadomasochist play, and halfway thriller, where nothing works in full.
To be fair, the only fully developed thing is the lunacy the characters, which renders the movie pointless in a charicatural word where nothing needs to make any sense. No one to root for, nothing to expect but more lunacy. At some point all we hope is that he won't kill her, because that would mean we are left alone with the main character - a dorky, flavorless average Joe, wrapped in a velvet-coated mess.