The Twilight series are crap. I have my BA in English Literature, and let me tell you, those books are just utter crap. I wouldn't let my daughter read them simply because it's an over-wrought melodramatic story that glorifies a psychotic relationship and abstinence. It's so poorly written. The relationship between Bella and Edward is so distorted and the girls reading these books sees him as an ideal mate.
The problem I have is that Edward is the only thing that's important to Bella. I have a life outside of my boyfriend, but she barely does and she neglects her friends for a guy, who stalks her while she's sleeping. And the creepiest thing of all: He wants to kill her and eat her.
Read this article: it's a feminist perspective on the books (and they talk about all of the books, so spoilers abound) and talks about how Meyer glorifies abstinence and basically creates a new genre: abstinence porn. And the only reason why he doesn't want to have sex (at all) is because he's afraid of killing her. What a great message that is! Sex can literally kill you! The only reason why the agree to wait until marriage is because Bella bribes him and basically says that she'll marry him only if he agrees to have sex with her.
http://*****magazine.org/article/bite-me-or-dont
And don't get me wrong, I read the series twice. And I do not and will not recommend it to anyone.
if you want to read a romance, read Pride and Prejudice. Something with actual literary merit.
EDIT: Stupid censoring. The website is
www.b itch magazine.org/article/bite-me-or-dont