Keeping negative interpersonal secrets can diminish well-being, yet people nevertheless keep negative information secret from friends, family, and loved ones to protect their own reputations. Twelve experiments suggest these reputational concerns are systematically miscalibrated, creating a misplaced barrier to honesty in relationships. In hypothetical scenarios (Experiments 1, S1, and S2), laboratory experiments (Experiments 2 and 6), and field settings (Experiments 3 and 4), those who imagined revealing, or who actually revealed, negative information they were keeping secret expected to be judged significantly more harshly than recipients expected to judge, or actually judged, them. We theorized that revealers' pessimistic expectations stem not only from the cognitive accessibility of negative information (Experiment S3) but also from a perspective gap such that the negative outcomes of disclosing this information, compared to positive outcomes, are more accessible for prospective revealers than for recipients. Consistent with this mechanism, revealers' expectations were better calibrated when directed to focus on positive thoughts or when they considered revealing positive information (Experiments 5, 6, and S4). Revealers' miscalibrated expectations matter because they can guide decisions about whether to reveal information or conceal it as a secret (Experiment S5). As predicted, calibrating revealers' expectations increased their willingness to reveal negative information to others (Experiment 7), suggesting that miscalibrated fears of others' judgment create a misplaced barrier to honesty in relationships. Overestimating the reputational costs of disclosing negative information might leave people carrying a heavier burden of secrecy than would be optimal for their own well-being. (PsycInfo Database Record (c) 2024 APA, all rights reserved).