The only way the vampiric venom can enter Bella's blood stream and "poision" her is if Edward breaks her skin. While kissing they have to be careful, I'm sure, but as long as he don't break the skin there's no way for her to be poisioned.
people lets remember that edward DOES NOT WANT TO CHANGE BELA and that means dat he must have kissed her gently so as not to break her mouth skin and dat doesn't mean it doesn't hurt her but edward is always very careful so as not to "END HER LIFE B4 IT EVEN BEGAN"
because he'd have to actually break through the skin so the venom enters her bloodstream to actually poison her. anyone who says that stephenie meyers is a shit writer should get the hell off a twilight fan spot and stop spoiling the fun for all us fans. this our spot so fuckoff
ok guys..it's like this..here's a girl who is in a love triangle with a werewolf and a vampire that sparkles! and you are looking for logic behind this tiny little thing? these stories are not supposed to be logical!
The venom would have to enter the bloodstream. They were always careful to make sure he didn't accidentally break her skin or bite her, and they never kissed while she had a cut in her mouth.
