When Charlie Hunnam and Dakota Johnson were first cast as Christian Grey and Anastasia Steele in Fifty Shades of Grey, they not necessarily have been what the fans had in mind for their ideal cast. However, Charlie tries his best to reassure fans in a new interview with the Hollywood Reporter.

Charlie Hunnam at a panel for Sons of Anarchy
When he first explained why he decided to take the part, he simply says, "As soon as we got in the room and started reading with Dakota, I knew that I definitely wanted to do it, because there was a tangible chemistry between us. It felt kind of exciting and fun and weird and compelling, and so that was it.” When asked about the raunchy sex scenes that would be required of him, he says, "My first job was on a Channel 4 miniseries called Queer as Folk. It was incredibly explicit sexual scenes with a man. I mean I’m 16 and 17 years wiser now. So if I could do it when I was 18 with a guy, I can certainly do it at 33 with a lady.”
He also describes how his longtime girlfriend, Morgana McNelis, reacted to the news. He says, "It’s very hard to be with an actor. She’s required to share parts of me that she wouldn’t really want to share. With the nature of this role, that’s going to be times 10… She read them and loved them and was really excited about the potential of the opportunity for me. If anything, I think it will make us closer. ”

Dakota Johnson at the premiere of 21 Jump Street
Fifty Shades of Grey is supposedly rumored to begin filming at the beginning of next year or the end of this one, and the film will come out at the end of next summer, in August of 2014.
Charlie Hunnam at the premiere of Season 6 of Sons of Anarchy