Jennifer Lawrence is back on our list - but this time she's not grossing out Liam Hemsworth with tuna and garlic before they kiss. In fact, if Lawrence and Hemsworth were ever required to kiss again, she'd likely have difficulty with the scene because he's married. That was her rationale with finding it hard to kiss Chris Pratt when they were making 'Passengers' together. Luckily, the always-inventive Lawrence had a solution to the problem.
Lawrence's moral issues with the kiss were twofold - Pratt was married to Anna Faris when the movie was made, and both Faris and Pratt were good friends of hers. In short, she felt like she was kissing her friend's husband, and couldn't shake off the feeling. Eventually, she decided to get extremely drunk before shooting the scene, which did the trick. Now we know she's so skilled as an actor she can also convincingly play a sober person while she's wasted!