Research finding that pornography use is associated with lower sexual satisfaction is common; evaluation of the mechanisms hypothesized as underlying the association is not. Informed by multiple theoretical perspectives, the present study tested a conceptual model positing that (a) regularly consuming pornography conditions the user’s arousal template to be particularly responsive to pornographic depictions, (b) this amplified arousal to pornography increases both (c) upward comparisons between one’s own sex life and sex as it is represented in pornography and (d) a preference for masturbation to pornography over partnered sex, which in turn (e) weaken perceptions of how satisfying it is to have sex with one’s partner, and ultimately (f) decreases perceptions of how satisfying one’s relationship is with one’s partner. Path-analytic results were supportive of the hypothesized linkages for both men and women. Discussion focuses on the implications of the present study’s findings for current debates in the literature and theoretical development.