Although traditions proclaim friendship as a universal concept, it was an androcentric model until the emergence of the female friend in the Age of Enlightenment. This book analyses the discursive turn from premodern to modern gendered constructions of friendship in Spanish Literature and sheds light on specific models of male, mixed, and female relationships in seventeenth- and eighteenth-century. It spans two centuries and scrutinizes the discursive production of social bonds in literary and theoretical frameworks ranging from political writing to poetry and from the working classes to the intellectual elite. Through novellas, novels, plays, poems, moral weeklies, and letters by female and male authors, every chapter examines a specific concept of fe/male friends related to society, politics, ethics, subjectivity, family and marriage structures, or courtly culture. Thus, the book demonstrates the very act of gendering as it relates to friendship as one of the most important forms of social interaction overall.