Answer:
I feel like they are really irritating.
The walker dosen't think will deserve to be the sign seeker.
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In Breaking Dawn Edward tells Jacob the he can kill him if Bella dies seeing as he doesn't want to live without Bella.
At first Jacob agrees however later on, once they believe Bella to be dead, Jacob says he will not kill Edward as he wants him to suffer.
Answer:
yes it is common and needs longer text :)
