The Northern Irish actor reprises his role as Christian Grey in the final installment of the movie trilogy, based on the raunchy novel of the same name by E. L. James, with Dakota Johnson again appearing as his love interest Anastasia Steele.
"This is going to sound bad, but it's nearly like brother, sister", Dornan, 35, told ET. "I panic. I just don't know how to respond because I'm not like him (Christian Grey)", he explains.
"And you have this mutual love and respect for each-other".
Jamie Dornan was left feeling very awkward when he attended a special screening of his movie Fifty Shades Freed. "They probably think I'm just really weird, which I'm fine with". "They try to sort of minimize how many people are in there". When asked if he wore "any kind of covering" over his man parts, the actor replied "Yeah, I wear like a wee-bag", which prompted laughter from the audience. "I wear quite a big bag", he joked.
"That's an expression I say from where I'm from, but it doesn't mean there's actually wee inside", he says. "I wear this huge travel case and sort of stuff everything inside".
And, although he's been filming the blockbusters for three years, Jamie is still waiting to get his own pouch - also known as a c**k sock - as he's always had a second hand one. And I thought I'd take them out of the packets, they'd be brand new. Grey while he's "literally holding one of my children". I was like, 'S**t. This has been used before?' When you picture the guy playing Inmate No. 3 in a movie in your head.I don't know. "So, I don't actually know the answer to that".