Robert Pattinson, Kristen StewartRobert Pattinson is still banging hanging out with Katy Perry -- the two attended a Bjork concert the other night -- and word has it that Kristen Stewart is none too pleased. A source tells the Daily Mail that KStew is feeling "incredibly down right now and betrayed" that her ex and her (former?) friend are acting so close -- and that they may even be in a romantic relationship. Hell, who can blame Kristen for being pee-o'd?

Listen, you don't go skinny dipping in your friend's former boyfriend's pool of love, okay? Chicks before dicks! That's just wrong. I don't care if Katy and Rob are just friends, it looks bad. If Katy and Kristen were pals, then you don't mess with your pal's man.

There's just something so wrong about it. Especially if you've confided to your friend about your relationship -- and the very guy she's now seeing.

The source tells Daily Mail that Kristen is having a difficult time getting over Rob:

Kristen is in a certain state of denial. She can't let go of Rob or get over him. She keeps trying to contact Robert and find out what he is doing but her attempts to see Rob have been rebuffed. Rob is not responding to her.

Yeah, I guess Kristen set herself up for this with that whole cheating fiasco, but really, did Rob NEVER ONCE stray from her? The way he's acting lately, I wonder. Who hooks up with your ex's friend?! I mean, not that we know that's what going on. Supposedly Rob is just "leaning" on Katy for "support." But have you seen Katy's knockers? No man leans on those without getting a grab on too.

Anyway, I guess now KStew knows what Rob was feeling when she hooked up with whatshisface. That director. Rupert Sanders. Had she just been getting revenge for stuff maybe Rob did but never got caught by a pap doing? Just speculating here, everyone.

Hey, I've got an idea. Kristen, meet John Mayer. John, meet Kristen.

Eww. Nah, she wouldn't go there, right?

Have you ever had an ex date your friend?


Image via myalexis/Flickr