The dichotomy between emotion and rationality has been one of the most enduring of sociological theory. This article attempts to bypass this dichotomy by examining how emotion and rationality are conjoined in the practice of the choice of a mate. We posit the fundamental role of culture in determining the nature of this intertwinement. We explore the culturally embedded intertwining of emotion and rationality through the notion of modal configuration. Modal configuration includes five key features: reflexivity, techniques, modal emphasis, modal (...) overlap, and modal sequencing. We apply this framework to the topic of partner selection. Comparing primary and secondary sources on pre-modern partner selection and on internet dating, we show that emotion and rationality were intertwined in both periods but that what differs between them is precisely the emotion-rationality modality. (shrink)