According to interpersonal acceptance-rejection theory (IPARTheory), people who perceive rejection by important others experience more psychological maladjustment than those who do not perceive rejection. IPARTheory predicts universal responses to perceived rejection or acceptance, making it important to explore its predictive ability with theoretically-related constructs like romantic relationships. Participants (N = 443; Mage = 36.05 years; SD = 11.26; 46% identifying as men, 45.4% reported their assigned sex at birth as male) completed surveys regarding perceptions of their childhood relationships with their mother, interpersonal anxiety, engagement in romantic surveillance, jealousy, infidelity, sociosexual orientation, and gender norms. We examined how well perceived maternal acceptance-rejection (independent variable) predicted reasons to spy/stalk on a romantic partner and the likelihood of spying/stalking (dependent variables). For both models, we explored psychological maladjustment, interpersonal anxiety, jealousy, and sociosexuality as mediators and included correlated demographic variables as covariates in the models. Jealousy mediated perceived maternal rejection and increased surveilling. Our study broadens the understanding of variables that influence surveilling behaviors in romantic relationships in the United States, and provides support for the universal application and predictive ability of IPARTheory.