Purpose of Review <p>This review focuses on links between pornography use, problematic pornography use (PPU), and infidelity. Specifically, the review had two main aims: (1) to examine perceptions of pornography use as infidelity per se, and (2) to explore potential associations between pornography use/PPU and (a) attitudes toward infidelity, (b) tendency to engage in infidelity, and (c) actual commission of infidelity.</p> Recent Findings <p>Research suggest that perceptions of pornography use as infidelity per se vary significantly across individuals, with some considering it an alternative to infidelity and others viewing it as a form of betrayal. Moreover, studies indicate that attitudes toward pornography, tendencies toward infidelity, and in-person infidelity behaviors are related to sociodemographic factors.</p>