LOS ANGELES (AP) — The producers of "The Social Network" are producing the film adaption of the best-selling erotic trilogy "Fifty Shades of Grey."

Universal Pictures and Focus Features said in a joint statement Monday that Michael De Luca and Dana Brunetti will reteam for the adaptation of the best-selling novels by E. L. James.

The multimillion-selling books tell the story of an unworldly college student engaging in an unusual romantic relationship with a wealthy young businessman.

They have been called "mommy porn" for their sexual content and large female following.