Sparks, Nicholas. At First Sight. New York: Warner, 2005.
This is an adult book appropriate for YAs.
Jeremy lives in NYC and makes his living writing a column for Scientific American and various other freelance jobs. He meets Lexie while researching one of his articles. He falls in love with her at first sight. Crazily, he proposes to her within weeks. He gives up his life in NY and moves to rural North Carolina to be with her. They buy a house and plans for their life together. She is also pregnant, but they had fallen in love before that. Their relationship is somewhat rocky before they walk down the aisle, fraught with misunderstandings and silly arguments. You wonder if they will ever make it down the aisle.
In typical Sparks fashion, the book will lead you to inevitable tears. For anyone unfamiliar with Sparks, his books are basically emotional romance novels. Sparks isn't for everyone. Only those that like romance and emotional books should bother with this one.