Ned and girls (spoiler)
I start by saying that I haven't read the book. So don't throw that in my face, please.
There's a certain scene I feel it's something wrong about. Why would the two girls want to blow Ned together? I find it very unlikely. Normal girls would never open up for such an act, and if it's the boy who expresses that wish, any sane girl would just walk out of there. I mean, he looks like an ordinary kid that age. And common teenager boys never have that kind of luck, it's like an erotic dream coming real for him.
Or are the filmmakers playing out the fact that Ned looks like a certain young actor (hint hint) and the girls find him hot because of that?