Hi, I've been lurking for a while and thought I'd finally dive in.
I think they've broken up because she wasn't at the Puss premier and she wasn't at the Emmys. I wasn't surprised she missed the Puss premier since they had been having public screaming matches, and there were some damning photos showing how just unhappy they were--not just the angry-face ones, but also one where she was sitting by herself two tables away from Alex and his friends. But I figured it was a just a fight that would blow over. However, there has not been one single photo or sighting of them together since then.
And I can't imagine her not wanting to be at the Emmys, especially since she's in town. Just like I can't imagine Alex not wanting to take her since they've been dating for almost a year. That doesn't mean they couldn't get back together, but it sure looks like they're apart right now.
As for liking or not liking her: I didn't have an opinion when they first starting dating. But as I saw more and more of her, it became obvious she's the famewhore that everyone says she is. She kept dragging him to fashion events that I couldn't picture him wanting to attend on his own (great to talk about here, but not for him). He would be just as happy wearing Gap and watching soccer. I think she was just FWB and Alex decided that the benefits weren't worth the aggravation. They probably both figured more would eventually develop between them, but it's gone downhill for them, not up.