Jamie Dornan and Dakota Johnson–stars of the upcoming film Fifty Shades of Grey–spoke during a recent interview about the filming scenes involving the Red Room. As anyone who read Fifty Shades of Grey knows, the Red Room is where sexual acts involving both bondage and submission took place.

The actors, who play the roles of Christian Grey and Anastasia Steele, respectively, appear on the cover of the March issue of Glamour magazine, and within its pages they share details about the film that will make some blush without ever stepping inside a theater.

Prior to divulging too many details, Jamie Dornan and Dakota Johnson talked about getting ready–and in shape–for the film.

“It wasn’t six hours a day. You don’t want to turn to your heavily pregnant wife and say, ‘I’m going to the gym for six hours. Text me if you go into labor,'”Dornan joked about his wife Amelia Warner, who gave birth back in November.

“Jamie and I actually shared a trainer. It was important to me that Ana’s body look like that of an active college student. And I was going be naked, so I wanted to look good. I did a lot of working out and had more waxing than any woman should have!” Dakota Johnson shared.

Fifty Shades of Grey…revealed! The surprising scene that was hardest for Jame Dornan to film: http://t.co/TATkX2RlzY

— E! Online (@eonline) February 2, 2015

Johnson was the first to spill about the Red Room.

“The scenes in that room were definitely the most vulnerable scenes in the movie. But it was a very closed set. My mom [Melanie Griffith] told me that it’s my right to ask for that during intimate scenes, so it seemed like [Dornan and Sam Taylor-Johnson, the director, and I] were in this little world together,” she said.

Jamie Dornan had no problem admitting that shooting the Red Room scenes made him uncomfortable.

“There were times when Dakota was not wearing much, and I had to do stuff to her that I’d never choose to do to a woman,” he said.

Johnson was quick to say that Jamie Dornan was a perfect gentleman, however.

“I felt very protective and aware that it probably wasn’t easy for her to be put in those situations, and exposed,” she said.

Do these comments from Jamie Dornan and Dakota Johnson about filming scenes in the Red Room make it more or less likely that you’ll see Fifty Shades of Grey? The film is set to hit theaters on February 13th.

Did you catch the Fifty Shades of Grey spot that ran during the Super Bowl on Sunday? If not, check it out below.