What is the sexual relationship between brother and sister called?

Incest
Incest (/ˈɪnsɛst/ IN-sest) is human sexual activity between family members or close relatives. This typically includes sexual activity between people in consanguinity (blood relations), and sometimes those related by affinity (marriage or stepfamily), adoption, or lineage.

Do siblings get sexually attracted?

It is not unusual for people to experience attraction towards their sibling as a normal process of experiencing and exploring their own sexuality. Shared genes and early experiences makes the templates of siblings most similar.

Can a brother be attracted to his sister?

It is possible for a brother to be attracted to his sister. This phenomenon is known as genetic sexual attraction (GSA). This hypothesis affirms that members of the same family who grew up apart tend to develop a powerful sexual attraction when they meet again during adolescence or adulthood.

Why do brothers fall in love with their sisters?

Brother and sister are instinctively attracted to each other and because there is no saturation of stimuli to kill any trace of physical attraction, they will fall in love with each other romantically and passionately (there is that unique connection that exists between any brother and sister, but is doubled by attraction).

What happens when siblings mate with each other?

What happens when siblings mate? When siblings mate, meaning having sexual relationships, perhaps the biggest consequence could be the birth of a child. From co-consanguinity (n.r.- sexual intercourse between people with the same blood) there are born children with numerous genetic diseases.

Is there such a thing as brother and sister relationships?

The only brother and sister relationships I would accept is step-siblings, adopted siblings, and with cousins gained through marriages. For example, The son of a woman getting married dating a girl who will soon become his cousin through their families joining through marriage.