Written in Lauren Denton's signature Southern style, The One You're With tells a story of marriage, choices, and what a good life really looks like. High-school sweethearts Mac and Edie Swan lead a seemingly picture-perfect life in the sleepy-sweet community of Spring Hill, near Mobile, Alabama. Edie is a respected interior designer, Mac is a beloved pediatrician, and they have a historic home on tree-lined Linden Avenue, two great kids, and an orange cat named Ramona. From the outside, the Swan family is the definition of "the good life." And, life is good-mostly. Until a young woman walks into Mac's office one day. A young woman whose very existence threatens all Mac and Edie have built and all they think they know about each other. Nineteen years after a summer apart, with a family and established lives and careers, the past that Mac and Edie thought they left behind has come back to greet them. For the first time, constants in their lives are called into question: their roles as parents, their reputation as upstanding members of the community, and the very foundations of their marriage. As they wade through the upheaval in both their family and professional lives, they must each examine choices they made long ago and chart a new course for their future.