Category romance authors have surmised the answer to that question for years now. Turns out, the truth isn’t that far from what those authors suppose.
In the experiment, men and women who had never met were put into a small, furniture-less room that was pitch dark. At first the two talked, but then the conversation escalated to touching. In fact, almost 90 percent of the subjects touched someone else on purpose, and a third ended up kissing. Nearly 80 percent of the subjects reported feeling sexual excitement.
What would you do if you were put into a dark room with a stranger of the opposite sex?