Six top science fiction romance novels

At USA Today, Veronica Scott compiled a short reading list of great SF romances, including:
Under Different Stars by Amy Bartol

Kricket isn't one to wish upon stars; she believes they're rarely in her favor. At 17, she's an expert at dodging caseworkers who'd force her back into Chicago's foster care system. But when soldiers from enemy factions find her, their plans to take her back to her true