“Fifty Shades” … tells the story of Anastasia Steele, an inexplicably virginal recent college graduate, and Christian Grey, the impossibly handsome and twisted 27-year-old billionaire who falls for her. Boy meets girl, boy whips girl, boy loses girl. In the end, … Ana has it her way: She declines to sign Grey’s “submissive” contract; they keep on having kinky sex, but not too much; and Steele helps Grey recover from his wounded childhood. …