In a schmancy hotel restaurant, Don observes all the romance going on around him, and then sees Betty descending the staircase wearing a beatific smile. She wishes him a happy Valentine's Day, but before they can sit down, Betty recognizes a passing woman who's about her age and calls, "Juanita?" Turns out she was Betty's roommate in Manhattan and a model as well, and she's celebrating Valentine's Day with her father. Well, it's a man old enough to be her father, but I figured you all are smart enough that if I told you that straightaway there would be no suspense whatsoever. Yes, after some uncomfortable posturing on Juanita's part, including a confession that her date is from out of town, and Betty getting Juanita's number, Don informs Betty that Juanita is a "party girl." Betty isn't scandalized so much as curious how Don knows that, and I know she's trying to trap Don into an admission of infidelity, but for God's sake, honey, the man was in the Army. Betty laughs about the whole thing, and then Don suggests they head up for some room service. Make sure you order a low-salt entrée...oh, that's not what he was talking about, is it?
Don and Betty enter the room, and after some kissing, Betty heads into the bathroom, all the while speculating about the going rate for ladies of the evening. When she emerges, she's clad in undergarments that...well, all I'll say is that it must have taken a lot of restraint for Don not to blurt out a dollar amount right there. He settles for a "Wow," and then heads into the bathroom himself. I'm just sorry we don't get to see his topper.