This is How You Lose the Time War by Amal El-Mohtar and Max Gladstone - An excellent time travel novella with a romantic underpinning. I reviewed it here.
So begins an unlikely correspondence between two rival agents in a war that stretches through the vast reaches of time and space.
Red belongs to the Agency, a post-singularity technotopia. Blue belongs to Garden, a single vast consciousness embedded in all organic matter. Their pasts are bloody and their futures mutually exclusive. They have nothing in common—save that they’re the best, and they’re alone.
Now what began as a battlefield boast grows into a dangerous game, one both Red and Blue are determined to win. Because winning’s what you do in war. Isn’t it?
A tour de force collaboration from two powerhouse writers that spans the whole of time and space.
Foe by Iain Reid - While I saw the twist coming, it's a great atmospheric read. My review of it is here.
We don’t get visitors. Not out here. We never have.
Junior and Hen are a quiet married couple. They live a comfortable, solitary life on their farm, far from the city lights, but in close quarters with each other. One day, a stranger from the city arrives with surprising news: Junior has been randomly selected to travel far away from the farm...very far away. The most unusual part? Arrangements have already been made so that when he leaves, Hen won’t have a chance to miss him at all, because she won’t be left alone—not even for a moment. Hen will have company. Familiar company.
Foe examines the nature of domestic relationships, self-determination, and what it means to be (or not to be) a person. An eerily entrancing page-turner, it churns with unease and suspense from the first words to its shocking finale.