Acts of sexual aggression are sometimes initiated through an online dating arrangement or encounter (e.g., through Tinder, Bumble). Certain personality and physical traits may be predictive of such sexual aggression propensity, and thus evident in online dating profiles (e.g., biographies and photographs). However, it is unclear whether (1) people are sensitive to such “red flags” and (2) whether safety recommendations employed by online dating platforms effectively enhance such sensitivity. For the first time, using an online dating simulation, we experimentally investigated the extent to which women's (n = 167) expressions of interest in men were sensitive to (i.e., influenced by) cues of threat in the men's online dating biographies and photographs, and whether the presence (vs absence) of safety recommendations enhanced this sensitivity. We find fewer expressions of interest for high (vs low) threat dating profiles, although the magnitude of this threat sensitivity/aversion effect varied across women and was not enhanced by safety recommendations. We identify some individual difference factors associated with this threat sensitivity/aversion, but our work underscores the importance of developing other interventions, technologies, or safeguards that screen for, or assist with, identifying such threats, making online dating interactions safer for all users.