Joan is on the phone with now-in-Vietnam Greg, telling him how Don was "smiling like a fool, like he's the first man who ever married his secretary." Greg asks when Joan is going to tell them her news, and this one at least I and many others called: She did not go through with the abortion, and as such is still pregnant. She tells Greg they'll know soon enough, and Greg asks if she's showing at all, as the pictures he's been getting haven't changed in that regard. That seems like a nod to the fact that she would be showing if Greg were actually the father, but since he's not going to be back for some time I'm assuming Joan's just going to tell him the baby came late. Or maybe it will cooperate with her lie by being premature. Anyway, in response to his question, she assures him that her boobs are in fact bigger, and after he tells her to make sure she eats enough, they hang up...

...and then we go to Ossining, where Betty is lingering in the kitchen with a packed box when Don walks in. Betty lets us know she forgot that Don had the appointment with the listing agent, and also neglected to retrieve the contents of the cabinets in the guest bath, which is why she's there now. Don jokingly asks if that means she wasn't that thorough, and she accepts the humor by conceding that she supposes she wasn't. Don then goes and retrieves a bottle of booze he had hidden on a high shelf in the kitchen, making Betty laugh at her ex-husband's ingenuity born of severe alcoholism. She gets out a cup for them and asks if Don likes the new house, so I guess he got consultation on where his kids would be living, and Don tells her he does indeed. She then asks if he remembers the Ossining house, referring to the times they had there, and when he says he does, she opines that the place in Rye is different.

As they share the drink, he asks if that isn't what she wanted, but she admits that her life now isn't perfect, and all the change they've been through has made everything difficult. She's obviously fishing for Don to respond in kind here, but what she comes up with is the unwelcome news about Megan, although Betty reasonably assumes at first that his fiancée is Bethany van Nuys. January Jones does some really nice work here as Betty goes through an expected range of emotions, eventually failing to meet his eyes as she affectlessly says she's very happy for him. He, however, at least tells her it's okay, giving her permission to feel something here, and this is enough for her to recover and smile that she doesn't know why she's surprised. She asks if she's her secretary, saying she heard she watched the kids in California, and Don admits that she is, but any further discussion is interrupted by the real estate agent ringing the doorbell. Don says his goodbyes, but Betty calls him back to give him her key. They regard each other for another long moment, and then leave in opposite directions, the bottle and cup they shared symbolically left behind on the counter...