Adam Galinsky, a professor at Columbia University, has published more than 150 scientific articles, chapters, and teaching cases in the fields of management and social psychology. His new book "Friend & Foe" with coauthor Maurice Schweitzer is about the balance of conflict and cooperation in almost every interaction.

We asked him why it's so common for people to fall in love with a coworker. 

Produced by Grace Raver. Camera by Darren Weaver.

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