Sexual minority men (e.g., gay, bisexual, queer) are more likely than heterosexual men to be involved in an adolescent pregnancy, but little research has been done on the context surrounding this disparity. To address this gap, and as part of the larger Sexual Orientation, Gender Identity, and Pregnancy Experiences (SLOPE) Study, semi-structured interviews and descriptive surveys were conducted with 10 cisgender sexual minority men, ages 29-49, from across the United States. Interview transcripts were analyzed using immersion/crystallization and template organizing style methods, and themes were organized into a conceptual model describing sexual minority men's debut sexual activity and decision-making experiences during adolescence. This model depicts three themes: 1) partnership and negotiation of sexual experiences, 2) psychological processes related to development, pregnancy, and sexuality, and 3) cultural and environmental contexts. These three themes are contextualized by a throughline of (i.e., the existence and chronology of life-impacting events). Findings indicate a complex interplay of psychological (e.g., developmental processes surrounding sexuality and sexual orientation), social (e.g., personal relationships), and policy-level factors (e.g., sex education) influence sexual minority men's sexuality and pregnancy prevention decision-making during adolescence. Care should be taken to consider and include sexual minority men in pregnancy prevention messaging and education.