Sleeping with Fauxlivia is definitely a pretty strong line to cross I agree, especially since Peter and Olivia only got to have one kiss and that's all. I can definitely see how it would be bothersome that he did that. I guess it sort of depends on if he knows or not on how to read that scene (no duh).

I'm really frustrated by the lack of Rachel and Ella, hopefully the show doesn't forget about them. But yeah, I wouldn't be surprised it they don't show them at all till Olivia returns, sadly.