When people searching for love find their perfect mate, they often liken the convergence to "chemistry" — that special something that brings one certain individual to the head of the class.
According to U.S. biological anthropologist Helen Fisher, whose research on body chemistry is behind a personality test on a new Japanese online matchmaking service, science can be used to quantify this formula that leads to a successful relationship.
And in the case of mate-hunting services, it can explain why one person is chosen over another, even if both seem to check the right profile boxes.
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