Sex robots are coming. We might even fall in love with them.

Is mutual love with a robot possible? And if it is possible, would it make relationships between human beings less desirable? Those are the questions examined by Lily Eva Frank, a philosophy professor at the Technical University of Eindhoven in the Netherlands who wrote an essay with Sven Nyholm for the new book Robot Sex. We already have sex robots, but the technology is still limited. Eventually, the machines will become sufficiently lifelike that the line between person and robot will be blurred.