What if Jacob never saw Renesmee? What if he jumped out the window and phased? What if he never learned that Bella made the transformation?
Jacob left the Cullen's house and never turned back. The Cullen's left quickly after that moment. They took Renesmee and Bella and left Forks, knowing that they could never return. Although Jacob had allowed for Bella's transformation he was not the acting Alpha. His imprinting did not end the feud. The Cullen's have broken the treaty in the eyes of Sam. And now with a broken, hurt, and angry Jacob feeding the wolves side. A silent war started brewing on September 11, 2006.
Jacob vowed two things that day.
To kill any Cullen on sight, even Esme. No matter what.
He would never love again.