In a new article with Time Magazine, Twilight producer Wyck Godfrey spills the beans on the Kristen Stewart/ Robert Pattinson relationship. The article covers other aspects of Twilight and coming films, but here is the juicy part:

Everyone is talking about whatever is going on between Robert Pattinson and Kristen Stewart. Is that good for business?
Do you want the honest answer? I haven’t even thought of it that way.

That’s not the honest answer.
It really is. I honestly don’t think of it in terms of business. It doesn’t affect our core business at all. The thing I do think about is, Oh my God, I hope they stay together. Because it could be awkward on set in the next movie if they have a huge falling out. It’s like, Wow, they have to portray this love story through two more movies. God, I hope they stay together; please stay together. That’s what affects my day-to-day.

But you walk by newsstands and it’s a publicist’s dream: they are on every cover.
I don’t feel it’s out there anymore. Do people still report on it? If you look at people who have a stable personal life, the rags get tired of them. I think we’re heading to that place where they are together and that’s their life and we better find someone new to create drama out of.