Charlie Hunnam
Charlie HunnamReuters

Charlie Hunnam almost had a nervous breakdown when his role in "Fifty Shades of Grey" was finalised. The actor recently revealed in a shocking interview to US Weekly that he was quite jittery about doing justice to such a big film apart from the conflicting schedule.

Not many will know that Hunnam declined the offer to act in "Fifty Shades of Grey" at the last minute, disappointing director Sam Taylor-Johnson.

The 34-year-old actor, who is known for his role of Jax Teller in the hit biker series, "Sons of Anarchy," did not want to "fail on the grand scale" by not giving the required commitment to "Fifty Shades of Grey."

"I just said, 'I can't... I can't ...,' to fail on such a grand scale — because Fifty's going to be massive, it's going to be huge," he said in an interview to the magazine.

Irish model and actor Jamie Dornan later replaced Hunnam. Sadly, fans of the erotic book series were disappointed when Dornan's name was announced for Grey's character. Many of them took to Twitter to express their disappointment.

It was rumoured that Hunnam quit the movie as he was afraid of being type cast but the actor confessed in the interview that he really loved the role.

"Sam (the director) and I just fell in love, creatively. We started talking about this thing and I just felt so excited. I fell in love with the character and started seeing him and becoming intoxicated, which is the way I work: I find a character I love and I start thinking about it all the time. It's painful because I loved the character and I wanted to do it. I'm also a man of my word," Hunnam said about his fondness for the character.

Grey is Anastasia Steel's love interest in the movie with dark shade. He comes across as a sweet and charming guy but secretly practices various erotic techniques, including role-playing, and dominance.

Though Hunnam is no more a part of the most-anticipated movie of the year, he will be seen playing an intense role in Guillermo del Toro's "Crimson Peak". The actor plays Dr. Alan McMichael who is an introvert but is madly in love with the female lead.

Currently, Hunnam is being seen in the last season of "Sons of Anarchy" on FX.