Hm....I don't really know why they are all attracted to her.
Well, actually, I think Bella actually was first of all, pretty. I pictured her pretty in my head. Plus, she was new. (Like mentioned, something new too look at). They found her interesting. And also, she's got a nice personality and tries to always do things for other people's benefit.
That's all I have for that question, I don't really know.
What do you think?