When the baby is born, they have a injection needle(?) with Edward's venom. Edward stabs it in Bella's heart and he also bites her all over her body, to spread the venom.
I HAVE NO CLUE but oh I wish he was real! I would go n meet him but he might eat me. LOL Just kidding. I love his character n wish he was real. Atleast I'll get to see his beautiful face.