so_what, ITA. Besides, Edward just lays there with his mouth open and Bella roots around inside looking for something sharp to prick her finger on. Bella seems to do the most tasting of her blood, too - more than Edward. It's just such a strange part of the scene. ...And, "like I said," I don't remember that "wanna taste" line in the book either.
Hmmm.... speaking of saliva and venom: Saliva from a bite, bad? And can turn it you into a vamp. But sloppy kissing not so much?

I just want to understand Meyer's vamp mythology....