Not If I Save You First by Ally Carter

Maddie thought she would be best friends with Logan forever.  That is until her decides to move her to Alaska with no warning. 

It's been six years without one word from Logan -- even though she wrote him every day for two years. 

She accepted that he no longer wanted to be friends. 
She accepted that her life only includes two people -- herself and her dad.
She accepted that she'll always be alone.

Then Logan shows up on her front step and he's brought trouble with him. 

Now they're trying to survive kidnappers and a wild Alaskan blizzard in the woods.  Will they make it through alive or will Maddie end up killing Logan?

This is a great stand-alone book by the author of the Gallagher Girls, Heist Society, and Embassy Row series.  I would highly recommend it to those who enjoy survival stories as well as those who like romances.