The increasing visibility of sexualities beyond heterosexual, gay/lesbian, and bisexual is often associated with progressive politics and the questioning of heteronormativity. Yet non‐majoritarian sexualities can also include self‐identifications premised upon an opposition to LGBTQ+ equality and inclusion, including those who identify as “ex‐gay.” Drawing on fieldwork with evangelical Christian activists in London, UK, this paper uses a court case in which the “legality” of ex‐gay sexuality was contested to discuss the law's simultaneous desire and inability to render contested identities legally legible. In seeking recognition as a sexual minority, self‐described ex‐gay evangelicals reveal the inadequacy of modern law's efforts to regulate difference as either “innate” or “chosen,” thus upsetting the terms of the hetero‐secular legal gaze even as they embrace heterosexual supremacy. As such, this activism, which is typically analyzed in terms of evangelicalism's commitment to heteronormativity, works to denaturalize the concept of sexual orientation(s)—including, I argue, the heterosexuality ex‐gay Christians pursue.