The friendship of the bachelor politicians James Buchanan (1791–1868) of Pennsylvania and William Rufus King (1786–1853) of Alabama has excited much speculation through the years. Why did neither one ever marry? Might they have been gay, or was their relationship a nineteenth-century version of the modern-day “bromance”? Then, as now, they have intrigued by the many mysteries surrounding them. In Bosom Friends: The Intimate World of James Buchanan and William Rufus King, Thomas Balcerski explores the lives of these two politicians and discovers one of the most significant collaborations in American political history. Unlikely companions from the start, they lived together as messmates in a Washington, DC, boardinghouse. They developed a friendship that blossomed into a significant political partnership. Before the Civil War, each man was elected to high executive office: William Rufus King as vice president in 1852, and James Buchanan as the nation’s fifteenth president in 1856. This book recounts the story of their bosom friendship through a dual biography of Buchanan and King. Special attention is given to their early lives, the circumstances of their boardinghouse friendship, and the political gossip that has circulated about them ever since. In addition, the author traces their many contributions to the Jacksonian political agenda, manifest destiny, and the debates over slavery, while finding their style of politics to have been disastrous for the American nation. Ultimately, Bosom Friends demonstrates that intimate male friendships among politicians were, and continue to be, an important part of success in the clubby world of American politics.