Despite the staggering number of crew members present, the hot lighting, and the inherent awkwardness of being naked, stars like Mila Kunis, Ryan Gosling, and Emma Stone have all publicly stated that shooting intimate liaisons isn't really all that bad...
Although the most intimate sex scene details are usually cloaked behind a veil of discrete professionalism, we wanted to dig deep and get some juicy tidbits from our favorite celebs.
So without further ado, here's our top ten red-hot sex scenes and all the insider info we could fit on a page...
In this infamous scene, Mila Kunis goes "downtown like Julie Brown" on Natalie Portman. The entire movie is an intense psychological thriller so the audience is already on edge, but then this graphic scene between two gorgeous women erupts out of nowhere.
"There is a sense of realness to it, like it was just the two of them there," said director Darren Aronofsky. "It's really a testament to their acting."
Many fans found that the hottest part of the sequence was when Natalie Portman's character orgasmed while Mila Kunis steadfastly performed oral sex on her.
To prepare for that intimate encounter, Portman and Kunis, who are friends in real life, had a couple of drinks. A bottle of tequila was procured for the occasion and the scene was shot in half a day, according to Aronofsky.
The director later told The Hollywood Reporter that the sequence was originally blocked for a day and a half, but he cut it short after feeling guilty for what he was putting the actresses through.
"Mila was fine, but I could tell that Natalie was ready to move on," the Requiem for a Dream director said.
Up next, we've got Ryan Gosling and Michelle Williams' drunken grudge sex...
Director Derek Cianfrance brought a sense of realism to his 2010 romance Blue Valentine. Unfortunately, he was reprimanded by the ratings board with an NC-17 rating for showing Michelle Williams’ character, Cindy, on the receiving end of oral sex.
The scene is cringe-worthy and familiar in a "we've all had sex this miserable" sorta way.
Yet, nothing about it is explicit. Fueled by vodka and conflicting emotions, Gosling and Williams go at it on the floor of their hotel room and end up arguing mid-thrust. Cindy gets a little violent, the whole thing turns into a fight, and no one orgasms. It's as anti-climatic as drunken grudge sex is in real life.
"The sex felt real," said Gosling. "It wasn't sexy or just a sex scene. That's why we got into trouble. We got penalized for doing a good job."
Gosling and Williams wrote an open letter to the MPAA appealing the film's rating.
"The MPAA is okay supporting scenes that portray women in scenarios of sexual torture and violence for entertainment purposes, but they are trying to force us to look away from a scene that shows a woman in a sexual scenario, which is both complicit and complex. It's misogynistic in nature to try and control a woman's sexual presentation of self."
Remember Mark Wahlberg's 12-inch fake penis from Boogie Nights? Well, so does his costar Julianne Moore...
The plot of Boogie Nights is pretty basic. A young and bright-eyed Mark Wahlberg is hustling and bustling to make it in the seedy 1970s porn industry. The one scene that stands out is near the beginning of the movie when he shoots his first porno with Julianne Moore, who plays a veteran actress.
When the actress stopped by Watch What Happens Live recently, she was put in the hot seat about the most intense love scene she's ever done.
Following a fan question, Andy Cohen pressed the 54-year-old star for more details about the iconic '90s movie, asking if it was her most "sexually demanding role."
"'Boogie Nights was interesting because there was a lot that happened in front of people," she explained. "So usually there aren't other actors present for sex scenes, but one of the things that was really weird about Boogie Nights was that there were all these other actors around."
The actress went on to say that although it was awkward having her costars watch her "simulate sex," it wasn't a totally negative experience.
"Mark is such a gentleman, and so handsome, it really wasn't too big a deal. He doesn't even need a big fake wang. I'd do it again," she added.
Up next we've got a sex scene that lasts a whopping seven minutes...
To call the sex in Blue Is the Warmest Color simply arousing feels like a slight against director Abdellatif Kechiche’s unflinching camera work. The thermonuclear heat between stars Lea Seydoux and Adele Exarchopoulos rocks the clock for nearly seven minutes in one of the longest sex sequences in recent memory.
And while you probably wouldn't want to watch the film with your parents, this cinematic sexual equivalent of The Iliad depicts many aspects of lesbian copulation you’d be hard-pressed to find in any other non-pornographic, feature-length film.
The two women explore each others’ bodies in ways that feel both natural and electric, shoving their fingers and faces wherever their instincts take them. It’s as hot as onscreen sex gets, and the arousal factor comes from the actors' authenticity, regardless of your sexual orientation.
But for all the passion the stars display on screen, the drama behind the scenes was anything but a good time.
"We hated each other," said actress Lea Seydoux. "To say we didn't get along would be an understatement."
And while The Notebook is definitely a fan favorite, here's why Ryan Gosling is still Rachel McAdams' favorite "sex scene partner" today...
No doubt there are a lot of reasons to celebrate this movie, and as many memes as it may have fueled, the sex scenes between Ryan Gosling's Noah and Rachel McAdam's Allie are truly inspired.
Up until that point, most sex depicted in mainstream cinema was of a very different character. It was always rough, even when it was passionate and full of love. The scenes were all about the guy throwing the girl down on the bed and ripping her clothes off.
In that first love scene, back when Gosling and McAdams were still kiddos in a run-down farmhouse, he pauses to ask her if she's okay.
"For a lot of young girls, that was a teaching moment about consent," said McAdams. "That's why, to this day, when I'm asked what my favorite sex scene is from a movie, I always say when Noah asks Allie if she's okay in The Notebook."
And like his character Noah, Ryan Gosling was a perfect gentleman on set and squeaky clean to boot.
According to Rachel McAdams, he "made filming love-making really quite lovely. One thing I always appreciated about Ryan was how clean he was and how good he smelled. You'd be surprised how many actors are dirty or sweaty."
Up next, we've got what it took to get Denise Richards to kiss Neve Campbell...
"Wild Things is lurid trash, with a plot so twisted they’re still explaining it during the closing titles," said film critic Roger Ebert. "It’s like a three-way collision between a soft-core sex film, a soap opera, and a B-grade noir. I liked it."
Denise Richards’ second big movie required her to appear nude and called for a lesbian kissing scene with Neve Campbell, as well as a threesome.
Richard’s breasts became the focus of several storyboards, which were sent between her lawyer, the producers, and the director in order to determine how much would be shown. At first it was decided that only one would be filmed, though they eventually filmed both.
In Richard's autobiography The Real Girl Next Door, she recounted filming the steamy scene, saying, “The producers asked if I was okay French-kissing Neve on camera. Usually it’s that pretend movie kiss, but they wanted the real deal. I thought, ‘Okay, I’m sure she has nice lips.'”
In order to get ready for their swimming pool kissing scene, Richards said that she and Neve went into her trailer and shared a pitcher of margaritas.
"Neither of us had ever kissed another girl before," said Richards. "Everyone has a first time I suppose."
And next, find out who said her Oscar-winning costar was pretty boring in bed...
This is a film that finds eroticism in small gestures; in the languid rest of a glove, and in a glance, shared across a crowded room.
When director Todd Haynes filmed the first time characters Therese and Carol have sex, Rooney Mara and Cate Blanchett's chemistry was already so palpable that the moment was nothing short of explosive.
"It's very much like shooting a musical number," the director told E! News of the scene. "You start the music and basically you just go and the camera finds the moments and the beats. And we had some amazing material with these two women to work with."
In the press, Oscar winner Cate Blanchett was very complimentary of her costar.
"Rooney was a delight to work with," she said. "She's sensual and perfectly soft and delicate. She put me completely at ease. I've had sex in real life that was less satisfying."
But unfortunately for Blanchett, Mara was less enthusiastic about their onscreen romance.
"I'm not into women, so, it was pretty boring," she said.
Remember David Lynch's masterpiece Mulholland Drive? You might be surprised to learn why Naomi Watts said filming that infamous sex scene was uncomfortable...
Mulholland Drive, the 2001 neo-noir mystery film written and directed by David Lynch, is consistently rated as one of the best films of the last twenty years and for good reason.
The enigmatic thriller stars Naomi Watts, Laura Harring, and Justin Theroux in the story of an aspiring actress who befriends an amnesiac recovering from a car accident.
But the most talked about part of the film, despite an Oscar nomination for Lynch and four Golden Globe nods, is the infamous lesbian sex scene between Watts and Harring.
Characters Betty and Rita share a midnight tryst in bed, but there's actually a lot less sex in the scene than many people remember. That’s not to say it’s not sexy. In fact, the few seconds where Betty cautiously strokes Rita’s exposed breast are some of the most arousing ever put on film. But there’s nothing all that explicit: they kiss, Rita undresses Betty, and they hold each other as Betty asserts, with tremendous conviction, how in love she is with Rita.
"What I remember most about shooting was how cold Laura's hands were," Naomi Watts said of her costar. "She had been drinking iced tea and her hands were literally freezing."
Up next, we've got a threesome and the Catholic actor who definitely wasn't cool with ménage à trois...
Alfonso Cuaron’s raucous classic inverts the American sex comedy: Julio (Gael Garcia Bernal) and Tenoch (Diego Luna) are stereotypical, sex-obsessed young men distraught at the idea of their girlfriends leaving the country.
Choosing to live as bachelors, they befriend an older woman (Maribel Verdu) who seduces both of them. Yet, the film drives them towards one surprising truth: their own bisexuality, finally unleashed during the film’s famous threesome.
The movie's conclusion is tragic as Julio and Tenoch's ultimately reject their own truth, turn their backs on each other, and suppress their feelings. Their threesome, however, still stands as a moment of genuine, harmonious sensuality.
But the filming of that scene was anything but harmony.
"Gael was pretty uncomfortable filming the erotic stuff," director Alfonso Cuaron told Out magazine back in 2001. "His family is Catholic and his upbringing was such that he had a lot of conflicted feelings. Diego and Maribel were great, though."
And last but not least, we've got the importance of good gum in hardcore male bonding...