Aaron Taylor-Johnson thinks he's ''too young'' to have starred as Christian Grey in the 'Fifty Shades' movies.

The 24-year-old actor, who's married to the 'Fifty Shades of Grey' director Sam Taylor-Johnson, says he's ''really proud'' of his wife's adaptation of the best-selling novel by author E.L. James, but has dismissed the idea he was ever in the running to play Christian Grey.

Asked whether it was a possibility, he replied: ''No, never! I think there would have been a lot of unhappy fans of the book.''

Aaron, who married Sam in 2012, admitted that as soon as his wife was attached to the movie, he knew he'd never appear in it and the role ultimately went to Jamie Dornan, 32.

He told Marie Claire UK: ''We both read it and knew right then that when she went into direct it, I wouldn't be the one to step into those shoes. And that was fine.

''It didn't feel like one of us was like, 'I really wanted to do that'. I'm obviously really, really proud of Sam and it was great to see her take that project and make it her own, and not have to feel like just because there's a role ... I feel like I'm too young for that role anyway!''

Last month, Sam confirmed she will not be returning to direct another movie in the 'Fifty Shades' franchise.

However, she added: ''While I will not be returning to direct the sequels, I wish nothing but success to whosoever takes on the exciting challenges of films two and three.''