In the second novel, New Moon, Edward and the other Cullens leave Forks in an effort to keep Bella safe from the vampire world.
Desperate to hear his voice again, Bella continually seeks out danger; she convinces Jacob Black to repair two old motorcycle,s and teach her how to ride.
She comes to care deeply for Jacob, though less than she loves Edward.
At the end of Eclipse, Bella becomes engaged to Edward, and they marry in Breaking Dawn.
Edward realizes that his relationship with Bella is putting her in danger.
In a misguided attempt to protect Bella, he convinces that he no longer loves her, and moves away with his family.