Even the most perfect first kiss scenes in movies have interesting stories behind them. From unexpected difficulties capturing the big moment on camera, to on-set encounters that were just plain awkward for everyone involved, here's a look at the true story behind some of cinema's most iconic first kiss scenes. First kiss scenes don't get much more iconic than Jack and Rose's sunset smooch on the bow of the R.M.S. Titanic. The picture perfection of the Titanic scene was largely a result of the magnificent sunset that the characters were bathed in, which was a complete stroke of luck for the filmmakers, who had to rush to capture the "I'm flying" scene before the sun would set. However, credit is due to Leonardo DiCaprio and Kate Winslet for committing to the romance of the moment, despite the fact that off-screen, they were anything but lovers. In fact, DiCaprio spent much of his time on the set trying to gross his co-star out. Winslet would later remember, "We shot that scene... about four times, and to be honest with you, by the end of it, we were just like 'Ugh, we can't kiss each other anymore.' It just got so boring, and I had his makeup on me, and he had my makeup on him." In other words, as swoon-worthy as the scene is on-screen, it was just another grueling day at work for the stars involved. Keep watching to learn about more of The Most Epic First Kisses In Movie History!