Why does Bella called Jacob Jake?
Maybe cause Jake is short for Jacob like Bella is short for Isabella..
Eventually, Jacob and Edward get along, but it takes a while. Nature - werewolves are the natural enemies of vampires. Jealousy - Jacob loves Bella, and Edward wants Bella to love him. Fear - Edward is worried that Bella will be killed when she is with Jacob, because werewolves have a hard time of controlling their emotions, and they can turn at any point- and Jacob could accidentally kill Bella.