LOVE is unpredictable and complex. After spending many years researching its layers, I remain in awe of how it engages every mechanism in our bodies and infiltrates every aspect of our lives. But for a species like ours that craves certainty, this can cause all sorts of problems. The first recorded evidence for an "elixir of love" dates back to 4000 years ago. Ready access to love drugs is at most a decade away. Indeed, they are already being used therapeutically to support couples in the US.
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