Robert Pattinson Kristen StewartHuh. Well this sure would explain a thing or two. According to a new report from RadarOnline, Robert Pattinson knew about Kristen Stewart cheating with Rupert Sanders well before the photos of the two of them smooching were released to the world.

Get this one -- a source says Robsten had an open relationship and that they had a "100 percent honesty policy" between them. Meaning they fully disclosed when they hooked up with other people and it was no big thang. (Apparently they're the real Gwyneth and Chris.)

Oh, and did I mention that the source adds, "Rob has had other women on the side and Kristen has had other women and men as well."

Wait ... there's more.

This friend of theirs also makes it sound like the two of them were never really in love -- like not even close. 

He/she said, "Their relationship was always a business and a spiritual partnership more than a romantic one. Rob and Kristen often said they might never see each other again after the last Twilight press tour and that’s pretty much what happened, except for their 'are you in town' booty calls."

Seriously? If their entire relationship really was this casual, then it would explain why Rob had no issues with taking Kristen back and giving her another chance after the cheating scandal broke. And it also makes sense out of the rumors that they're still not quite done with each other -- even though most people think Rob should've quit KStew a long time ago.

But one thing doesn't quite add up. If Rob and Kristen were so open with each other, why did he sit back and let her get ripped to shreds in the media when the photos of her and Rupert Sanders surfaced? If he'd spoken up and defended her and let everyone know their relationship was "open," he could've saved her a lot of unnecessary grief. Maybe she wouldn't have been stamped with the "trampire" label.

At this point, I'm not really sure whether to believe this story or not. But given how odd things between them have always seemed, it wouldn't exactly be the shock of the century if they weren't anywhere near as serious as they wanted us to believe.

(Ugh. What a letdown.)

Do you think Rob and Kristen had an open relationship?

 

Image via Pacific Coast News