From the magazine that has brought you quality reading material such as “Can you Vajazzle and Still Be a Feminist?”, tips on how to tell your love interest that he/she is going to get “explosive” oral sex later (in emoji), new uses for that glazed doughnut you got from the Dunkin’, how not to emasculate a man by asking him out on a second date and how to deep freeze your undies for thrills comes the latest and greatest: an article entitled “This is what it’s like to fall in love with your brother.”

The article weaves the tale of two siblings, “Melissa” and “Brian”, who were separated as children reunited as adults after the death of their father. They met at a bar after chatting on Facebook and the phone and walked out of the bar hand-in-hand to the car where they proceeded to “tear the clothes off” of one another. Scientific contributors to Cosmo explain this phenomenon known as Genetic Sexual Attraction (GSA):

“Social scientists and psychologists have long researched how societies’ prohibition against incest evolved: It’s essentially nature’s way of protecting humans from passing along the genetic mutations and disease risks that happen more commonly with close relatives, explains Dr. Debra Lieberman, a professor of Psychology at the University of Miami. The dominant theory, first proposed by Finnish social scientist Edward Westermark, is that people become desensitized to those they are raised alongside.

“Westermarck’s hypothesis and my research have shown that siblings use clues like living under the same roof and being cared for the same parents to develop a sexual aversion,” Lieberman says. “But if you don’t grow up together, no aversion naturally develops.”