Your first kiss is always awkward.
You bang heads, clash teeth and, if you're going for the hat-trick, you bite your snogging partner's tongue (we've all done that right, RIGHT?)
While most of us get much better at this over time, imagine what it must be like for actors who have to kiss people on screen for the first time with a whole entire film crew watching them (and probably judging them) as they get involved with someone else's face.
Not only do you have to make sure that it looks good on camera, you also have to make sure it's realistic.
To prove that it's not always glamorous as it sounds, we've compiled a list of some of the most memorable kissing scenes on screen and what the co-stars had to say about it.
Thankfully there's no biting involved. Well, not that we know about.
Sarah Michelle Gellar on Selma Blair
When asked in a recent interview who her best ever on screen kiss was, Sarah Michelle Gellar answered 'That's easy, Selma Blair'. The pair shared an iconic kissing scene in Cruel Intentions and clearly it left a lasting impression.
Jennifer Lawrence and Josh Hutcherson
Speaking to CNN last year, Josh Hutcherson revealed that Jennifer Lawrence was his first on-screen kiss in The Hunger Games: "I haven't had any bad ones. [Jennifer] is my first real big kiss in a movie."
"Really?" Lawrence responded. "Oh my God, was I gentle?"
"No. It was a little abrasive, if I'm being honest. A little shocking."
"It was very slobbery," replied Jennifer.
Oh J-Law. How we love you.
Kate Hudson on Heath Ledger
"I would say my favourite one was Heath; that was pretty excellent," said Kate on the late Heath Ledger after filming The Four Feathers.
Ethan Hawke on Angelina Jolie
In 2004's Taking Lives, Ethan Hawke and Angelina Jolie are on the hunt for a serial killer. In the movie, the two eventually get together, and Ethan has some very complimentary words for the actress.
“Angelina Jolie was born to whittle men, to make them weak. When she kisses you, you don’t know your name".
Cold shower for Ethan coming right up.
Robert Pattinson on Kristen Stewart
When asked about the kissing scenes on Twilight and how they co-ordinated doing it for the cameras, Robert Pattinson teasingly replied: "Kristen doesn't know what she's doing at all [laughs]. It was always going to be difficult no matter what the direction. It was kind of difficult as all the kissing scenes are the key relationship scenes. But there's always the elephant in the room that I always want to kill her."
Keira Knightley on James McAvoy
Keira Knightley declared that her co-star in Atonement, James McAvoy, is “the best kisser ever!”
Megan Fox on Shia LaBeouf
When asked what was her favourite scene to film in Transformers, Megan Fox replied "the kissing scene. Really."
Will Poulter on Jennifer Aniston
"It's downhill from here, I don't think I'll get the chance to kiss Jennifer Aniston again," said Brit Will Poulter after smooching Jennifer in the film We're the Millers.
Oprah Winfrey on Forest Whitaker
After the pair starred in The Butler as husband and wife, media mogul Oprah revealed the following about her on-screen other half: “I felt pretty good about it, let me just say. Forest is a good kisser, how about that?”
Theo James on Shailene Woodley
Better known as Lady Mary's Mr Pamuk in Downton Abbey, Theo James starred in Divergent alongside Shailene Woodley. On the matter of him kissing his co-star, he said: “I just wanted to practice the kissing scene with Shai as much as possible. I’d say ‘Listen, after dinner we could just go over that scene again’”.
Emma Watson on Rupert Grint
Many a Harry Potter fan will testify that the build up to the kiss between Ron Weasley and Hermione Granger in the film version of JK Rowling's books was pretty immense.
However, while the fans will have been happy with the final result, Emma Watson, who plays Hermione, said about kissing her co-star Rupert Grint, who plays Ron, that it was "was the weirdest, he is like my brother".
Dream = ruined.
Mila Kunis on Ashton Kutcher
This real-life couple have just welcomed their first child into the world but way before they began dating, got engaged and started a family, they starred in That 70s Show together as boyfriend and girlfriend. In fact, Mila Kunis' first kiss ever, and not just on screen, was with her now fiancé.
On the kiss they shared, Mila said:, "Oh, he's so cute, it's the Calvin Klein model!" 'Then I was like, "I have to kiss him?' I was so nervous and uncomfortable. I had the biggest crush on him."
Kirsten Dunst on Brad Pitt
Normally we'd be completely envious of Kirsten Dunst getting to kiss Brad Pitt but after hearing what she said about him, we'd have to politely decline.
Despite the fact that it was just a little peck, that didn't stop Kirsten from revealing that it was "disgusting".
In an interview with Bullet magazine, the Interview with a Vampire star said:
"Everyone at the time as like, 'you're so lucky you kissed Brad Pitt,' but I thought it was disgusting. I didn't kiss anyone else until I was 16."
Louise Brealey on Benedict Cumberbatch
If you're a fan of Sherlock or Benedict Cumberbatch (who isn't?), you've probably already watched this kiss a million times. But for those who haven't seen it, it's the moment when Sherlock swings through an open window and then grabs long-term crushee, Molly, and goes for a full-on pash.
Lousie Brealy who plays the character Molly in the BBC's popular drama said:
“I milked it! Afterwards, Ben and I watched it back on the monitor. ‘Yup, that’s pretty hot.’” “And of course it went completely crackers when the show came out. I got 7,000 Twitter followers within five minutes of that kiss airing. It had doubled by the time the episode ended.”
Watch it again here. Seriously go do that now.
Emma Stone on Andrew Garfield and Ryan Gosling
When asked by Ellen Degeneres who is the better on-screen kisser Ryan Gosling or Andrew Garfield who she starred with in Crazy, Stupid, Love and The Amazing Spider-Man respectively, Emma Stone replied in a classically pithy way:
"It's apples and oranges," she said.
"I love all fruit!"
Kirsten Dunst on Tobey Maguire
As part of her role as Mary Jane in the Spider-Man movies, starring opposite Tobey Maguire, the actress revealed she felt sick when she kissed him in one scene, where they were suspended on a web:
"I was getting nauseous because my feet were higher than my head and all the blood was rushing to my head and I got kind of dizzy in the web."
Ryan Gosling on Rachel McAdams
"You have to be born with a magic mouth. Some have said about Rachel that she's kind of like what Jimi Hendrix was to the guitar."
Ryan Gosling was talking about his co-star Rachel McAdams in The Notebook, of course.
Lily Collins on Jamie Campbell
While filming The Mortal Instruments, Lily Collins and Jamie Campbell ended up together as a couple. That didn't make it any easier for Lily though.
"In terms of kissing, I promise you that it is super awkward and super unsexy because everyone’s staring. People are cast because they have chemistry. You’re spending 24-hour days together and it’s intense, plus you really get to know the best and worst sides of people – the rawest sides of people. You’re perfect for the role because you have that connection with each other and sometimes that translates into more."