Brothers dating each other
This is why sexual attraction is occasionally reported in adoption reunions, some claim in as many as 50% of cases.
The flip side is something Lieberman calls her "template hypothesis." All people form a template for the world based on the people and their surroundings during development: what men and women look like, what their roles are, etc. This is common for non-related couples, too, psychologist and sex expert Isadora Alman notes."Many couples experience the feeling of being instantly attracted to someone that is familiar in some way, whether it's a physical reminder of someone beloved or something else they can't put their finger on," Alman says.
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.
"It was trippy, like seeing yourself in the opposite form," Brian says. Your cells know that this is person."They drove together to a nearby bar, and on the way, Brian grabbed Melissa's hand and found himself telling her everything. The term was coined by Barbara Gonyo in the 1980s after she experienced an attraction to the adult son she had placed for adoption as an infant.
She remembers having an immediate and intense reaction to hearing Brian's voice.
"I don't really know how to describe the feeling, but I was really attracted to it."Later that night, the pair separately scrolled through each other's photos on Facebook. Then in bed, I started having actual sexual fantasies," Melissa concedes.
(She later started a support group for other families.) While the American Psychological Association does not use the term, GSA is what it sounds like: a phenomenon that occurs when two family members, who were separated early in life, eventually meet and experience an intense sexual attraction to each other — though not all act on it.
On the way home, Melissa called a friend to explain what happened.
He said he grew up knowing his stepfather had a secret child out there, and even tried to contact Melissa years before, but her mother always intervened. "Of course, I was flipping out."She asked to meet Chris in person.