** spoiler alert ** 
 4.5 stars. 
 This is the second Jessica Sorensen novel I've read and I am now a fan. I really enjoyed The Coincidence of Callie and Kayden! 
 "In the existence of our lives, there is a single coincidence that brings us together and for a moment, our hearts beat as one." 
 Callie is a social outcast after an unfortunate incident on her 12th birthday which made her cut her hair short and began losing weight. She doesn't have friends, doesn't go to parties, and prefers to be alone. She's basically invisible. 2 days before she leaves for summer classes in College, she met Kayden on his graduation party. Kayden was a complete opposite of her, he was a popular football player and sorrounded with equally popular people. Who would've thought that the strong athlete needs help, and that Callie will be the one who will do the saving? After the "saving" incident, they went on their separate ways but neither forgot what happened that night. Destiny brought them back together after 4 months, and later developed an emotional bond that neither of them expected. 
 Likes: The POV! The his/her POV made it easier for me to relate to the characters and at the same time understand their emotion about certain situations. I loved the characters, both the main and supporting ones. Callie and Kayden both have demons that keeps them awake at night and makes them react in an abnormal way when they are exposed to their triggers (Callie purges and Kayden cuts himself). Seth, who Callie met in College, also have a troubled past. He and Callie became fast friends and each other's confidante. Together they fought their demons and help each other move on with their lives through their "list". Kayden on the other hand have Luke. He is Kayden's best friend since they were children and later became good friends with Seth and Callie. I liked their little group, even though the story revolved with Callie and Kayden, we also get a glimpse of Seth and Luke's personal issues. Of course I also loved the "list" Seth and Callie made, it was creative and very inspiring. 
 Dislikes: Just like the rest of the peeps who read the book, I hated the way it ended. It was pure torture! I wish there was a warning in the blurb that says: "Hey this book is awesome but it ends with a cliffhanger!", but of course no one will do that. So, If you're reading this review and haven't read the book yet, consider yourself warned. The Coincidence of Callie and Kayden ends with a cliffhanger. I suggest you wait for the next book to come out if you don't want to keep guessing and waiting about what happens next. LOL! 
 I recommend this book to those who love New Adult/ College Age books that deals with serious issues such as rape and abuse. 
 I can't wait to read Book 2!