A sibling-in-law is the spouse of your sibling, or the sibling of your spouse, or the person who is married to the sibling of your spouse. More commonly a sibling-in-law is referred to as a brother-in-law for a male sibling-in-law, and a sister-in-law for a female one.

What is it called if you date your sibling?

Romantic and sexual relationships between siblings or other family members is called incest, and if one of the people involved are under the age of consent then it is illegal because its illegal for an adult to date a minor.

Can a 16 years old boy get a girl pregnant?

Boys are able to get a girl pregnant when they begin to produce sperm in their semen. This generally begins when they start puberty, which can be from ages 11 to 14. Until puberty begins, males are unable to get a female pregnant.