Jacob couldn't tell Bella about the Cullen's because of the pact that Carlisle and Jacob's great grandfather, Ephraim Black, made stating that the Black's and the other werewolves wouldn't reveal what the Cullen's really were to the "white people" for the exchange that the Cullen's would stay off the Quileute lands.
Jacob Black
He told her the Quileutte legends which was about the treaty between the vampires (Cullens) and werewolves (Quiluettes).
No, but his dad does know
no, not always especilly not rosalie and Jacob
No, Bella did not flirt with Jacob to get him to tell her about the legends of the Cullens. Jacob willingly shared information about his tribe's legends as part of their friendship and his own interest in her.
He is good because he fights along side the CUllens in order to save Bella.
jacob
Well, there are the other Cullens, Jacob Black, Bella's friends, Charlie, any one you can think of.
Tells Bella about the wolves and the cold ones (vampires) and helps her realise that the cullens are vampires and is her friend
Jacobs dad tells Jacob to wanr Bella to stay away from the cullens Jacobs dad is billy
bloodsuckers... her precious Cullens !
Vampire LegendsThe Original Answer above is wrong its actuallyQuileute Legendsas Bella only realises after she looks at the legends that the Cullens may be Vampires.* Actually the answer that Bella searches on google aboutEdward is cold ones.... but I actually dont know what she searched when she was talking to Jacob