Hello, Goodbye, and Everything in Between — Jennifer E. Smith

Every ending is also a new beginning.

On the night before they leave for college, Clare and Aidan only have one thing left to do: figure out whether they should stay together or break up. Over the course of twelve hours, they'll retrace the steps of their relationship, trying to find something in their past that might help them decide what their future should be. The night will lead them to friends and family, familiar landmarks and unexpected places, hard truths and surprising revelations. But as the clock winds down and morning approaches, so does their inevitable goodbye. The question is, will it be goodbye for now or goodbye forever?