Olivia Wilde: “There is always a particularly large and hairy man holding a boom wearing a crop top. I don’t know if they’re like, ‘Ooh, sex scene, where’s my crop top because I need to hover above Olivia, make sure my hairy belly is somewhere in the vicinity of her face.’ People imagine it’s this really glamorous and sexy thing, but I always laugh because in reality there are 50 people in the room. You are stopping and starting. There is someone yelling, like, ‘Can you move your hand, can you just put your shoulder down, OK, good, more, more …’”

Jamie Dornan : ‘Your dignity is intact as much as it’s all tucked away in a little flesh-coloured bag… As a guy you put all your essentials in a little bag and you tie it up like a little bag of grapes and it’s tucked away,’

Amanda Seyfried: “Sex scenes are great. A lot of my co-stars have been sexy guys my age, and so, why not? I’m not going to pretend it’s not fun,”

Ben Stiller: “You kind of just have to, when you’re doing it, serve the story and try and be as real and in the moment and do what’s required.”

Joseph Gordon-Levitt: “It’s a pretty technical process. It’s built out of lots of little pieces. It’s not as if we’re over there just making out and someone’s shooting.”

Dakota Johnson : “Filming a sex scene is not a sensual or pleasurable environment. It’s really hot – not in a steamy, sexual way. It’s just sweaty and it’s not very comfortable.”

Michael Douglas: “The hardest thing about sex scenes is that everybody is a judge. I don’t know the last time you murdered somebody or blew anyone’s brains out, but everyone has had sex and probably this morning, which means everyone has an opinion on how it should be done.”

Dave Franco on Neighbors: “It was my first real sex scene where I show my butt. You’re not going to have that reaction when you see it on the big screen. It was nerve-wracking. I was pretty nervous. I met the girl the day before, and she was beautiful and very sweet. But it’s awkward. You meet each other and then you’re grinding. You don’t even know her name … barely.”

Lena Dunham on Girls:“I will be lying there, kind of being slammed by a naked body, thinking, ‘I want out of this bed. I want out of this scene. I want out of this life. Who did this to me?’ And I realized, I’m my own boss. I’ve written it. I’m directing it. I’m the person holding myself in sexual slavery.”

Justin Timberlake: “It’s actually kind of annoying, you’re there for 12 hours, it’s exhausting.”

Martin Scorsese:“In the ‘70s, sex was tougher, stronger, I think. Certain things were very powerful, and I mean movies like Five Easy Pieces or Drive… They were so strange. Now, to a certain extent, with the exception of Crash, which I think is an extraordinary movie, and the very powerful way that Breaking the Waves goes about sexuality — there is a kind of scrubbed-clean quality that is not even sensual anymore. They are fake images and fake bodies. How do you shoot a sex scene? What would you do? I personally don’t know how anymore… It really is tougher.”

Vanessa Hudgens on Spring Breakers: “It was very nerve-wracking for me. I told my agent I never want to ever do it again.”

Ryan Reynolds on The Change-Up: “So in the scene she’s (Olivia Wilde) sitting there, and I take her top off, I take her bra off, and she has those pasties on, but she’s drawn these adorable little smiley faces on them. And I forget every line in the scene. Not just from this movie, from every movie I’ve done.”

Michael Fassbender: “Sex scenes can be quite awkward. As a guy, the first thing you want to do is make sure you’re not taking advantage. You don’t want the girl to feel like you’re getting a free feel or something. I try to make a fool of myself in one way or another to lighten the mood and then just go for it, because you don’t want to be doing take after take.”

Mila Kunis: “It’s hard to have a sex scene, period. It doesn’t matter if it’s a friend, a male, a female. You’re with 100-something crew members, lighting you, repositioning you, there’s no comfort whatsoever.”