Stony Brook University Psychology Professor Arthur Aron has been a scientist of love for almost 50 years. He specialises in human closeness, the overlap between other and self, and relationship quality, and friendship. In 1997, he created an experiment to bring strangers closer together, in which two people ask each other 36 strategically constructed questions. The so-called "36 questions" experiment went viral last year, after a New York Times essay reported using it with her partner as they fell in love. Dr. Aron works alongside his wife, Dr. Elaine Aron, who's an expert on the highly sensitive person.