Jacob found out about different kinds of imprints on November 9, 2015. His father showed him the tribe records that he had translated to English. Turns out there were two different kinds of imprints.

There was the kind that showed your true brother or sister and the romantic kind. He found out that Bella's daughter, Renesmee, was his true sister. He feels very protective of her. He would help her no matter what, and he would beat the shit out of anyone who had hurt her. She would have a companion for life. Bella and Edward were both relieved when Jacob told them this. Jacob was also glad since the situation with them was very, very weird.

Renesmee seemed to be the most relieved. She had grown up considering Jacob a brother. He was the one first one she told she was a lesbian. She was happy that he was good with it, and his acceptance strengthened their tight knit bond.

Jacob also wouldn't have found his Leah. He had actually imprinted on her after he found out about the imprint thing. They had a double imprint and quickly fell in love. He had actually proposed to her on his eighteenth birthday, and of course she said yes. Then, they got married on Valentine's Day.