The Host

"Melanie Stryder refuses to fade away.

Our world has been invaded by an unseen enemy. Humans become hosts for these invaders, their minds taken over while their bodies remain intact and continue their lives apparently unchanged. Most of humanity has succumbed.

When Melanie, one of the few remaining "wild" humans is captured, she is certain it is her end. Wanderer, the invading "soul" who has been given Melanie's body, was warned about the challenges of living inside a human: the overwhelming emotions, the glut of senses, the too vivid memories. But there was one difficulty Wanderer didn't expect: the former tenant of her body refusing to relinquish possession of her mind." - From author's website
"Science fiction for people who don't like science fiction." - Stephenie herself
   
   This book was really good. The first time I finished it, I closed the book, turned back to the front page, and started reading again. I did that the second and third times I read it, too. That's how enchanting it was.
   Those of you who have read and loved Twilight will understand when I say that Stephenie Meyer makes you feel as if you're in the story, in every word on the page. You might not understand, though, when I say that this was so much better than Twilight. Don't believe me? Read it and see.
   Now, don't misread the quote up there - if you like science fiction you will like this too. But those of us who prefer fantasy will feell like this is fantasy. This is just an amazing book. I can't describe it any better than that. Seriously. If you like books, go read this one.