What does it make you if your boyfriends grandfather and your grandfather are cousins?

Yes, there would be some blood relation, but not enough to make a difference if the two of you married and had children. It's really nothing for you to be concerned about. A random fact, the last...

Yes. However, technically speaking, the relative would be referred to as your grandfather's cousin or your cousin twice removed.

If your great grandfather's first cousin was the great grandfather of your friend, then you and your friend are fourth cousins to each other.

i am personA's aunt

If your grandmother's sister was a cousin (presumably first cousin) to your husband's grandfather, then your grandmother was also first cousin to your husband's grandfather. You and your husband...