At Least Don Draper Never Slept with Peggy Olson

Has Don Draper come down with amnesia or something? Seriously, because, early on in the season, he did this:



Then this happened:



Then, after he finally got his life in order -- settled down by dating one woman who was his contemporary, cut back on drinking and starting evaluating his life by keeping a journal -- he reverted back to this:



That last scene really annoyed me, particularly because Don slept with his secretaries after they "mothered" him by telling him he'd had too much to drink, by bringing him his keys and trying to tend to his needs, like asking him if he wanted some food and insisting that he have an aspirin. All of Don's other secretaries -- Jane, Joan, Peggy and even Ida "queen of perversions" Blankenship -- had slept with someone from the office, but Don, as far as viewers saw, hadn't. At least until this season where he's slept with two secretaries and a woman who's doing consulting work for Sterling Cooper Draper Pryce.

Anyone else hate that Don seems to be taking a giant leap backward?