Nick is not so innocent...
I mean when it came down to it, he said no, but he was definitely considering it. Like for instance, when he's naked in the bathroom and she's sitting right outside, he doesn't even close the door all the way to change. Weirdo. And when he watches HER change. And that "if you were ten years older..." line. Who says that to a fourteen year old girl? Creepy. And he shouldn't have taken her to the lighthouse, that was messed up, and when he kissed her there. So inappropriate! He completely knew what he was doing.
He knew it was wrong so he acted like he thought it was, but it didn't feel wrong to him until she went psycho. I'm just saying. I find it gross that he played it off like he is completely an innocent victim.
just sayin.