My two cents on this is:

Whether she was guilty or not, the moment you got into her MySpace account, the relationship was finished. Because if she was innocent, you would have either told her what you done, which she would have hated you for, or you would have kept it quiet but still have done a shitty thing, an untrustworthy thing. Okay, so she was guilty of stuff...you still broke into her account. It was doomed from that moment on.

Move on, is what id suggest now.