Your enjoyment of My One and Only will depend on how much the words “inspired by incidents in the life of actor and Hollywood icon George Hamilton” spark swoony memories. Star of Love at First Bite and Zorro, the Gay Blade, The Suntanned One executive-produced this benign coming-of-ager about the 1953 cross-country adventures of teenage George (Logan Lerman), his swish half-brother, Robbie (Mark Rendall), and their Blanche DuBois–like mother, Anne (Renée Zellweger), who leaves her philandering bandleader spouse (Kevin Bacon) in New York. Stops in Boston, Pittsburgh, and St. Louis allow Anne to husband-hunt as director Richard Loncraine ushers a series of TV actors (Steven Weber, Chris Noth, Eric McCormack) in and out as potential mates. Written by Charlie Peters, My One and Only allows Zellweger to fully commit to her bargain-basement Tennessee Williams character, if not a consistent Southern accent. Rendall does limp-wrist well; Lerman serves as an adequate vessel for Hamilton, exorcising adolescent struggles with Mom, whose biggest failing is that she doesn’t know that The Catcher in the Rye is his favorite book. Occasionally diverting but ultimately forgettable, My One and Only will become unforgivable if it inspires other former competitors from Dancing With the Stars to go in search of lost time.