"Bared to You" by Sylvia Day, "Thoughtless" by S.C. Stephens and "Open for Business," a collection of short stories edited by Alison Tyler, are three books that are recommended for reading after completing "Fifty Shades of Grey." All three books are considered erotic novels.
"Bared to You" is the most similar in plot to Fifty Shades of Grey. The story follows the relationship of a controlling, attractive businessman named Gideon and a quiet, sweet woman named Eva. "Thoughtless" is about a love triangle between the main character, Kiera, her boyfriend Denny and a musician who is their roommate and Denny's best friend. "Open for Business" is the most different of the two, but is similarly explicit. It is a collection of erotic short stories, all of which revolve around the workplace.