How much does evolutionary wiring impact the types of relationships we seek? Does it really come down to nature vs nurture? How much of whom we are attracted to impacted by our ancestors? Is there such a thing as free will? Effy and Jacqueline get nerdy with evolutionary psychologist Dr. Adar Eisenbruch - whose research centers around cooperation, friendship, and behavioral endocrinology - to talk about how much of our relational choices are contemporary and how much is written deep into our source code over millions of years ago. To find more about Dr.