Fans of Julie Buxbaum's Tell Me Three Things and Morgan Matson's Since You've Been Gone will get caught up in the drama of this road trip romance that begins with an unplanned flight layover in L.A. and turns into a wild adventure. FLYNN: At first we were almost strangers. But ever since I moved to New York, Amos was the one person I could count on. And together we were there for Poppy. (I mean, what kind of parents leave...