Dream's Embrace

Two worlds, one full of dragons and Vikings, and the other, the modern world we all know.
Astrid has been having dreams about a boy who can train dragons, and win battles that should be impossible. A kind hearted boy, who she is slowly falling in love with. A boy who can never be hers. After all, he is just a figment of her imagination, so it's not possible right?
What if one day the same boy from Astrid's dreams, a boy who she has never met joins her school. The problem is, this boy is completely different from the one in her dreams. He is cold as ice and wants nothing to do with her. Still, Astrid feels drawn to him, like a magnet.
However Astrid's problems are about to get a lot more complicated. The lines between fantasy and reality are becoming increasingly blurred, and she is losing the ability to distinguish between what is real and what is not. As well as this, the boy at her school, he knows something, but the question is what?
An even bigger question... which world is the dream?
(Disclaimer: I do not own any of the characters from the dragons series, I am just using them for this story. They belong to DreamWorks. Any quotes from the films or TV series also belong to DreamWorks)