Stephenie Meyer blames herself for Robert Pattinson's and Kristen Stewart's troubles.

The Twilight Saga author admitted she feels guilty that the pair's real-life relationship has been scrutinised so closely after they played lovers Bella Swan and Edward Cullen in the movie adaptations of her books and claimed they hated the attention.

Asked if she felt guilty, Stephenie told The Times: "Absolutely. Here's the thing: there are some actors who are looking to be world famous, to be that household name, and although they might discover that there are a lot of negative things involved in that, it's what they want.

"But that doesn't apply to Kristen and Rob. That's what makes it kind of ironic and tragic."

Stephenie admitted the main source of her guilt came from the fact that they had had to deal with all of the public attention, which she had escaped.

"I just don't think they enjoy the parts [of fame] that other people would. And I totally get that, because it would not be my thing either," Stephenie said.

"At the same time - and this is where the guilt comes from - it's created this nice, peaceful place for me. They took all of my heat, which I feel bad about.

"If they had the choice, I've no idea if they'd even do Twilight again. I just don't know.