This article offers a critical reading of the 2011 Brazilian Supreme Federal Court decision recognizing same-sex civil unions as family units. While celebrated as a landmark for sexual minorities’ rights, the judgment operates through an affective grammar that disciplines as much as it includes. Drawing on critical perspectives on law and sexuality, I argue that the decision mobilizes a heteronormative framework of conjugality, in which the very term “homoaffective subject” functions to produce a domesticated and respectable figure, while silencing more radical forms of kinship, desire, and care. The article advances the notion of “affective coloniality” as a key to understanding the normative costs of recognition.