Peter spots Fauxlivia looking out the window, and by the time he gets upstairs and she's coming out of the apartment, she's still seemingly freaked out to require a hug from Peter, which I don't think you need to be a particularly longtime viewer to know that that's not exactly an Olivia trademark, but any excuse for Peter to press his stubbly body up against his girlfriend while at work, I guess. "He came at me, I had no choice," sobs Fauxlivia, and Peter gets to be the comforting hero, which he doesn't question at all.
Back at the Harvard lab, Astrid's still flummoxed by the numbers. Walter asks if she's had any breakthroughs, and she hasn't, but she thinks maybe she should add up all the numbers. Walter encourages her to keep at it, adding, "And I wouldn't go in the bathroom, dear." He must be such a joy to work with. Wait a minute, he's been in the bathroom THIS WHOLE TIME? Good grief, even I don't take that long, and that's where we keep our Onion books!