Yin and yang or two peas in a pod? Shutterstock
Relationships are often interpreted as the outcome of an exchange of goods and services.
Common knowledge says that the sexes want different things from a partner.
These preferences are often reduced to shallow, one-dimensional demands – beauty for men and resources for women. “Opposites attract,” they say. No one asks, “Why did that beautiful, young woman marry that old, old man?” because they already know the answer. He had something she wanted and she had something he wanted.