What is it called when siblings are lovers?

The half-siblings say they are prime examples of genetic sexual attraction (GSA). 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.

How do you know if your sister is in love with you?

15 Signs You Have the Sweetest Sister in the WorldYou had someone who helped you build your character. You shared a lot of toys and gadgets with her. You gave each other real talk. You had someone to cover your back. You had someone to pour out your emotions to. You were complimented by her.More items

What is it called when a brother marries his sister?

A double cousinship occurs only when a set of siblings marries another set of siblings and both have children. In your case, this is a brother and sister marrying a sister and brother. Double cousins actually share the same gene pool as siblings. They share all four of the same grandparents.