The conversation between the two was supposed to come to a conclusion and not a kiss. In reality, Tom Cruise forgot his lines! Instead of starting the scene over, he decided to kiss McGillis instead. The director liked it, so he chose to keep it in. Quick save!
Stranger Things
In fact, this kiss was the opposite of easy. It was never in the original script, but the folks in charge decided to suggest a kiss the day of filming the scene. The idea stressed out Sink just because kissing a boy in front of so many people is terrifying! Fans were a bit upset to hear that Sink seemed pushed into it. However, Sink said that she was uncomfortable but easily could have said no.
Gigli
Oddly enough, Gigli was the reason that Ben Affleck and Jennifer Lopez even got together in the first place. This film was gory and gross and didn't need a romantic aspect to it, but the directors did it anyway. Viewers were simply not interested in a romantic subplot and didn't care for the kiss whatsoever.