The Here and Now by Ann Brashares
Prenna is a Traveller. She has come from the future to escape the plague that has wiped out most of her family and has changed the world. Ethan, a friend from school, may know more about Prenna's secrets than she realizes, and knowing about Prenna could put them both in terrible danger. As Prenna begins to discover, her "community" may not have her best interests at heart, or even be trying to save the world from the grim future she knows is in store. When a stranger reveals some of the details that lead up to the start of the plague and destruction of the world, it is up to Prenna and Ethan to try to set things right before it is too late.
This story was creative and interesting. I loved Ethan and the banter between him and Prenna. A very enjoyable read!
*I received an ARC in exchange for an honest review.