Solid episode, with some nice setups for the rest of the season.
2 - Bob's not bit. Sorry, but there's nothing to indicate it. I know why the comic readers want it, but everything he did fit with the rest of the episode. When he kissed what's-her-face, he said "Another one" because it's their 'thing'. They did - and he said - the same thing on the road earlier. He went outside to cry because he's the guy that always stays upbeat and positive, but that's hard to do. He wanted to go to DC - see how he acted with Abraham earlier. He wouldn't go without Rick, but he wanted to go. Rick agreeing was a load off for him too, a relief. Add that in with all the pressure to be positive, and you get moments where he has to be by himself and let off some pressure, hence the crying. On top of that, he came back with them and spent several hours with them before going outside. That's not something he would have done had he feared dying at any time. That doesn't mean it still can't happen, but there was nothing in this episode that would lead you to believe Bob was bit. And Bob ain't done yet...