Seasonal Fears by Seanan McGuire

 

Melanie is 'the sick girl'.  She was supposed to be a twin but something went wrong during her mother's delivery and both her mother and sister died.  Melanie was left with a bad heart and she has had multiple surgeries and hospitalizations.  Her father is overprotective and Melanie just wants to be a regular girl.  Harry is her boyfriend.  They have been drawn to each other and together for years and he watches out for her and protects her.

But now everything has changed.  They both passed out at the same time and it turns out that it is because it's time for their destiny.  Melanie will be a contestant as the new Winter Queen and Harry as the Summer King.  There are other contestants and each is determined to take the prize, even killing the other contestants if necessary.

Harry and Melanie flee town and take off to determine what they need to do in this new situation.  They are accompanied by Jack, who is sent to shepherd Melanie through the process and along the way they pick up Jenny, who does the same for Harry.  They meet both friends and foes along the way and there is violence.  Who will win through and become the next King and Queen?

Seanan McGuire is well known in the fantasy genre and as Mira Grant, the science fiction/horror genre.  She holds the record for most Hugo nominations in one year when she had five in various categories.  In this book, which is the second in a trilogy, she gets the teenage relationship just right.  The world building feels right and Melanie and Harry both have secrets in their lives that are slowly revealed.  I listened to this novel and the narrator did a great job in bringing the action alive.  This book is recommended for fantasy fans.