Humor tends to predict romantic attraction, but does the style in which it is communicated matter? This study uses experimental methods to test the effects of positive and negative humor styles on short‐term and long‐term romantic interest. The authors randomly assigned 251 participants to read 1 of 4 relationship initiation vignettes depicting either an affiliative or aggressive humor style. Participants reported their short‐term and long‐term interest and made judgments of the relationship initiator's competence and warmth. Results support a fitness indicator model of humor style's role in relationship initiation; positive styles were preferred for long‐term relationships while competence and warmth inferences predicted long‐term attraction. The findings are discussed within the broader context of mate selection goals and challenges.