Bella loves Edward as much as he loves her. Yes, maybe Edward was waiting for her over a century,but she proved her love so many times. She was ready to die for him. She nearly died ..twice. Of course,Edward would do the same. Yes,she kissed Jacob,but it doesnt mean that she loves Edward less. Just the opposite. She choose him over Jake. So .. they both die for each other. And there is no thing like- He/she loves her/him more.