You're Jon's BROTHER.
Game of Thrones Season 3, Episode 10
After my BROTHER confessed...
Game of Thrones Season 1, Episode 9
You will not name him BROTHER,
Game of Thrones Season 2, Episode 2
not for you, not for my BROTHER, not for anyone.
Vikings Season 1, Episode 8
He said Sansa had a BROTHER at Castle Black.
Game of Thrones Season 5, Episode 1