Initiating conversation with someone you like can be nerve-wracking. Acknowledgments: This work was funded in part by the NIH under grant K01-HD-079554 (to E.E.B.) and the NSF under grants DMS-1107796 and DMS-1407207 (to M.E.J.N.). Author contributions: Both authors formulated the research problem, developed the methodological approach, analyzed the data, and wrote the paper. Step-By-Step Swift