WhenNew Girl returns in January, Schmidt (Max Greenfield) is in for a rude awakening when it comes to learning about his new fiancée Cece's (Hannah Simone) past.

It was promised that recurring guest star Megan Fox would "shake things up in the loft" when she joined the show (as Reagan, a pharmaceutical sales rep subletting a room from Zooey Deschanel's Jess), and Simone told TVLine that the description is "definitely" accurate.

"The first episode that they wrote for Megan revealed that my character and her character had a bit of a romantic past," Simone said. "By the end of that first episode, they're in the shower together."

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Naturally, Schmidt will have a hard time with the news, and Reagan has to "break him out of the rut," Fox added.

What sort of explosive reaction do you expect from Schmidt? Are you looking forward to seeing Megan Fox on New Girl?

New Girl's Season 5 premieres on Tuesday, Jan. 5 at 8/7c on Fox.