Meredith enters Molly's room to let her and Susan know that Addison is operating to remove an intestinal obstruction from the baby. Molly starts crying (as one does), and Susan is very comforting in a strong mother kind of way. Molly wants to call her husband, who is serving in Iraq, but she's scared that he'll want to name the baby, which she'd rather not do until she knows the baby will survive. Meredith is kind of freaked out by the sight of a loving mother-daughter interaction, and she leaves the room.
Izzie enters the twins' room, and Alex asks why she isn't shadowing Mark. She tells him that Mark can kiss her ass, but she doesn't reach the last word because one of the twins makes a pained exclamation. Alex tells him (Peter) that he hasn't even stuck him with the needle, and Peter apologizes for his extreme fear of pain. Izzie points out that they're about to undergo a very painful surgery. Jacob is not thrilled with her attitude, and asks her, "You think this is an elective procedure? That we're just coming in here because we're getting on each other's nerves?" Well, you're certainly getting on my nerves. Can I get surgery to take care of that? Jacob tells Izzie that the real reason they're getting the surgery is because they have rules, rules that Pete has been violating. It turns out that most of his violations involve doing things like talking to Elena when Jacob is on a date with her, or accidentally touching her when she and Jacob are having sex. And that is an image you will not soon get out of your mind. I know, I've tried. Elena comes to Pete's defense, and Jacob tells her not to talk to him anymore. He also asks her how she could possibly be fine with having Pete touch her while she's naked. Her inability to answer is pretty much all the response anybody needs. Jacob accuses her of being into Pete, and (after a short pause that's still too long) reassures him that she's completely in love with him. Pete is really hurt to hear that. However, as much as Elena loves Jacob and the sex with him, she finds herself chatting with Pete after Jacob falls asleep. And not to be all "Men are from Mars," but Jacob might consider what a sweet deal he's got -- he can feel free to fall asleep as soon as sex is over without his girlfriend wanting to chat and cuddle because she's already got someone to chat with. But he doesn't agree with me. In fact, he demands that she choose one of them. When she doesn't immediately choose Jacob, he's furious and Peter is elated. And then Jacob punches Peter in the jaw and tries to smother him with a pillow. It takes the other three people in the room to separate them. But not too far.