I don't think anyone can prove that anything happened between Brad and Angelina before he and Jennifer decided to separate. At least not at this point -- did I miss something? So I'm not sure you can necessarily call her a homewrecker . . . Still, their behavior was pretty shady.
I blame Brad.
Angelina not only said that she would never have biological kids, she also said she'd never get involved with a married man . . . so it looks like she's batting a thousand here.