In this debut novel, longtime romantic partners Kathryn and Chris experiment with an open relationship and reconsider everything they thought they knew about love. After nine years together, Kathryn and Chris have the sort of relationship most would envy. They speak in the shorthand they have invented, complete one another's sentences, and help each other through every daily and existential dilemma. When Chris tells Kathryn about his feelings for Emily, a vivacious young woman he sees often at the Laundromat, Kathryn encourages her boyfriend to pursue this other woman--certain that her bond with Chris is strong enough to weather a little side dalliance. As Kathryn and Chris stumble into polyamory, Next Year, For Sure tracks the tumultuous, revelatory, and often very funny year that follows. When Chris's romance with Emily grows beyond what anyone anticipated, both Chris and Kathryn are invited into Emily's communal home, where Kathryn will discover new romantic possibilities of her own. In the confusions, passions, and upheavals of their new lives, both Kathryn and Chris will be forced to reconsider their past and what they thought they knew about love.