With the main leads having been cast, production for "Fifty Shades of Grey" has already begun. As far as Charlie Hunnam's co-star in "Crimson Peak" is concerned, Jessica Chastain dishes on a few film titbits. According to the "Zero Dark Thirty" actress, the sex scenes are quite "steamy." What else did the gorgeous red head have to say?

The online petitions against Charlie Hunnam as Christian Grey and Dakota Johnson as Anastasia Steele continue. Yet, producers are unlikely to recast both stars for the whims and wants of the fans. Putting fan hate aside, some readers are still supportive of E.L. James choices for Christian and Ana.

Now, all that's left is for Charlie Hunnam and Dakota Johnson to prove themselves to the fans of the erotica novels. One thing is for sure: speculation continues on just how much sex would be reflected into the film. "Fifty Shades of Grey's" screenwriter, Kelly Marcel, did promise she'll stick to the books' kinkiness and raunchiness.

"Well, there is going to be a lot of sex in the film," said Marcel in a report by Screenrant. "It will be NC-17 [the equivalent of a British 18 certificate]. It's going to be raunchy. We are 100 per cent going there...We did go through and decide which are our [favorite moments] and which are not. Most of them are in there, but I can't say more than that," she added.

"Regardless of what you may think of [James'] writing, this is a modern love story, involving two complex characters, and that's what I'm interested in. You have to work at it and talk about s- and figure it out, regardless of what that s- may be. I don't care what anybody says, there is something about Christian [Grey] that is old-fashioned and romantic," continued Kelly Marcel.

Well, fans won't have to worry about the sex involved in the film because Hunnam's co-star, Jessica Chastain, in "Crimson Peak" promises it will be "steamy."

"I heard it's like steamy sex," said Chastain. "That's fine. I like written porn. The imagination is very strong," she added.

Cross those fingers and pray the film does stay true to the novel once the film debuts on Aug 1, 2014.

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