New Moon by Stephanie Meyer
After reading Twilight, I had a lot of unanswered questions about Bella Swan and Edward Cullen. I thought that New Moon might be able to answer these questions. Unfortunately, it left me with even more questions.
In this second book, Bella is dumped by Edward shortly after her 18th birthday. She is heartbroken. Her only solace comes from her new friend, Jacob Black. Jacob and her do daredevil stunts, like ride motorcycles. However, their relationship too is torn apart by a secret that Jacob is keeping.
I can't tell you anymore without giving away the story. You will just have to read the book to find out what Jacob's secret is and if Bella and Edward get back together.