This is the first study evaluating the desire to marry and attitudes toward same-sex family legalization in an Italian sample of lesbians and gay males from 18 to 35 years of age. Even though the majority of participants reported a positive attitude toward same-sex family legalization, gay men expressed a lower desire to marry than lesbian participants. Participants with a high level of internalized sexual stigma were less likely to want to marry and to recognize the positive effects of the legal recognition of the same-sex family. Regression analyses showed the relevance of internalized sexual stigma, self-disclosure to family, political progressivism, and higher education to predict a desire to marry and a more positive attitude toward same-sex family legalization. The results point to the necessity of social policy reform to eliminate social and structural inequalities surrounding the pursuit of intimacy to reduce disparities in intimacy-related stressors of lesbians and gay men.