Alice threw Bella a birthday party but it ended in a disaster. When opening a present she got a paper cut and that triggered Jasper to go into beast mode. He tried to kill Bella but Edward pushed him away. After that day Edward didn't feel the same and he didn't want Bella to have to go through something like that again. He wanted her to live a normal life and be safe. Thinking that it was the best option, he decided to leave her. She instantly became depressed at the realization that he was gone. She then started to hang out with Jacob a lot more and he seemed to be patching up the whole that Edward left in her heart. She was wrong. When he just stopped talking to her all the nightmares and pain came rushing back. He wouldn't call her or go and visit her. He was going through some changes. To see Edward again she went cliff diving. Alice saw a vision of it and thought she was dead. She then told Rosalie who told Edward. He thought of himself as a monster and wanted to die as well. Bella went with Alice to go and stop him from revealing his vampire self.