its not even legal, let alone normal.
no he does not have a twin brother
He has a brother, Kevin, but not a twin.
Yes he does have a twin brother
Yes, Gallagher does have a twin brother.
No, Althea Gibson did not have a twin brother.
Esau was Jacob's twin brother.
Jacob does not have a twin brother in the Bible. The closest figure to Jacob with a brother is Esau, who is his twin brother according to Genesis 25:24.
Siva has an identical twin brother called Kumar, and Jay has a non-identical twin brother called Tom
Marlon, his twin was called Brandon.
No, the comedian Gallagher did not have a twin brother.
No. She has a younger brother and sister and brother. And an older sister and brother. But not a twin
Unless it's a conjoined twin, I'd say nothing out of the ordinary. just treat her like a normal girl. Talk to her, tell her how you feel, but also mention that you want to stay friends no matter what.