I was so hoping that Nathan and Karen were going to have sex in the train scene before getting interrupted since they did have a passion for each other and I think that there might have been some reference to them sleeping together before.
They didn't sleep together before. They kissed on a summer vacation when they were younger, like 13 years old or so, but after the summer he never asked her out.
You have a point, I actually thought that's where the scene was going, they get all hot and heavy and then she just out of nowhere decides she's hungry, really, thats what was going through her mind at that point, I find that very hard to believe!!!
It was awkward when she was all, I'm going to get some food. Maybe too much too soon? But then you're being hunted so not sure why they got romantic when that's the last thing they'd be thinking of.
I am in a thousand winds that blow, I am the softly falling snow.