In the run-up to the release of "New Moon" later this week, as much speculation has centered around the love affair between Edward Cullen and Bella Swan as it has on the rumored one between their real-life counterparts, Robert Pattinson and Kristen Stewart. While KStew has adamantly refused to indulge questions about any romance with her co-star, in an interview with MTV News, she did discuss Edward and Bella's connection. And in the process the actress gave insight into what she deems difficult about relationships — and what happens when they go sour.

As "New Moon" begins, Bella and Edward's romance falls apart after he decides it's too risky for a vampire to be with a regular high school girl. He absconds to Europe, while Bella is left with a broken heart.

"Bella has basically been told within the first 10 or 15 minutes of the movie that her entire belief system, everything that she has planned on her whole life, she's dead wrong about," Stewart explained. "And I feel that may be the worst part of being broken up with, is not necessarily losing that person, but just thinking you can be so wrong about something. Now you don't even know yourself anymore."

Regardless of the pain Bella has to endure, Stewart maintains that the split was necessary to strike a balance between the couple — a balance she clearly feels is integral to any relationship, fictional or real.

"I think it's important for her to lose him because when she finally accepts him back, she's in a place — not controlling, but she's not as subject to him," she said. "And he is now beholden to her. He's now trying to say he's obviously very sorry."

Check out everything we've got on "The Twilight Saga: New Moon."

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