It’s method acting, apparently. Not wanting to disappoint avid Fifty Shades of Grey fans, Jamie Dornan made sure to prepare thoroughly for the role.

In a new interview with Elle UK, Jamie Dornan talks about how he prepared for his unusual role in Fifty Shades of Grey.

Christian Grey is a successful young entrepreneur, who controls his anger issues by practicing BDSM. It’s obviously very important to get into the proper mindset for the role, and Dornan takes his job very seriously.

As he should: the E.L. James books have a massive fan following, and Dornan has to work to convince the people who doubted his casting.

Speaking to Elle, Dornan describes his visit to a sex dungeon.

“I went there, they offered me a beer, and they did… whatever they were into. I saw a dominant with one of his two submissives,” he says.

In Fifty Shades of Grey, Christian is the dominant, and makes Ana his submissive. You can catch a glimpse of his own sex dungeon in the trailer:

However, it might have been a bit hard for these people to continue their act with a spectator, as Dornan soon found out.

“I was like: ‘Come on guys, I know I’m not paying for this but I am expecting a show,'” he explains. “It was an interesting evening. Then going back to my wife and newborn baby afterwards… I had a long shower before touching either of them.”

We’ll have to wait and see if Fifty Shades of Grey can dominate the box office when it arrives on Feb. 13, 2015.