This interview is featured in the Robert Pattinson, Kristen Stewart, and Taylor Lautner - In Their Own Words ebook.
Rob talks about what his favorite moment was from the series and why:
Yeah, what touched you the most and the hardest one?
Probably that a bit in the first one, just when Bella is in the hospital, and she says, ‘Don’t ever leave me again,’ and I say, ‘Where am I going to go?’ or something like that. I still think that’s kind of my favorite scene in it mainly because it was so different what happened after it, and we made up the lines there and that’s how different the shoot was. Like every movie afterwards, the idea of making up lines, is kind of just unheard of and so I loved that bit.
He also is asked about playing the role of Christian Grey in 50 Shades of Grey and jokes about the author turning him down:
Q: Have you read 50 Shades of Grey and did you know it was based on you and would you star in it?
I think the author has written me out of it. I saw some interview earlier and they went, oh, it could never be him. And I’m like ,’Hey, I’m going to make you pay for that.’ (laughter)
Read more at the source, where Rob talks about Kristen’s clumsiness in BDP2, Mission Blacklist, and keeping costumes from the Twilight set over time!