What is your brothers girlfriends brother to you?

Answer 1

Your brother-in-law is the brother of your spouse or the husband of your sister.

If your sister-in-law is the sister of your spouse, then her brother is your brother-in-law, unless you are a female, in which case he might beyour husband. If your sister-in-law is the wife of your brother, her brother is not related to you

Answer 2

He is just your brother's girlfriend's brother until. Which means he is off limits until your brother breaks up with her.

Yes that's true but really until they get married or have a baby hes only a stanger don't worry

Answer 3

Your sister's brother is your brother. Or yourself if she has no other male siblings.