Why do tu think Edward stop's james from killing Bella o Victoria when Bella kissés Jacob?

Because he LOVES her!!!!!!!
Duh!!!!!!!
And first of all,Edward killed James before Bella kissed Jacob!!!!!
Also...he LOVES her!!!!!!!!!!!!!!!!!!!

well he kills james before jacob kisses bella and he loves her and he killed victoria because he loves bella no matter what he just wants her to be seguro and happy!!!!

AOIFEB923 is right. Erdward loves Bella.
And he also wants her seguro so it doesn't matter to him that she kissed Jake.
He would also want her seguro if she choses Jakob over him.

Edward's just good to the core.

Because he loves her. Whether she got tricked o not. He knows that Bella loves him más than she loves Jacob. He knows that if he had died in 1918 that she would be with Jacob, but he didn't and thats what matters.