Are Jasper and Rosalie related?

Jasper, being the lovely vamp that he is, took Rosalie's last name so the humans think they're related. A lot of people say they're twins - I dont agree because Rosalie is grade above Jasper and is older. read more

Rosalie and Jasper Hale share the same last name as a ruse. Carlisle decided he would pass Jasper and Rosalie off as twins with the last name of "Hale" because of the relationships between Jasper and Alice and between Rosalie and Emmett. read more

Jasper and Rosalie Hale are not actually blood related. They tell people, however, that they are, and were adopted by Carlisle They tell people of Forks, WA they are twins. read more

They're not related (besides being adopted Cullens) but Rosalie liked to go by her real last name when she was adopted by the Cullens, that being Hale. Jasper was also blonde they decided to pretend that they were biological siblings and he took the last name Hale. read more