The old Neil Diamond song about a good guy who can't find a faithful woman is an odd choice for the title of this film (it's sung by Johnny Cash over the opening credits). This movie's male protagonist is the exact opposite, a prowling horndog who's inability to keep it in his pants destroys every relationship in his life. Maybe co-directors Brian Koppelman and David Levien didn't listen to the lyrics, or maybe it's just another colossal miscalculation in this highly preposterous and unpleasant film. Michael Douglas stars as Ben Kalmen, once a powerhouse New York City car dealer. But philandering has cost him his ex-wife and business partner (Susan Sarandon), a fraud conviction makes it impossible to get financing for a new dealership, and now that he's pushing 60, he's a slave to his wandering libido, deluding himself that his compulsive sexual conquests will stave off the ravages of time.