“And who are you supposed to be?”

For that matter, what does Don want? He’s not a simple philanderer. Or, more accurately, simply cheating with a stewardess who happens to fall in his path leaves him cold. With Suzanne, as with his previous affairs, he has to have a romance of some kind, even if it’s one that he knows can’t go anywhere, as Suzanne laments this week. Or maybe it’s especially if he knows it can’t go anywhere. Just as he created “Don Draper,” Don creates these little doomed love narratives and sees them through to the end with a look of regret on his face, just like the time before. His time with Midge, Rachel, Bobbie, and now Suzanne all had their ends written before they began, even if Suzanne the first to actively note the expiration date. If I were to put Don on the couch, I’d say each woman offered a challenge where Betty, the accommodating homemaker, defined herself by making his life easier. But that story’s started to end as well.

from the avclub's take on this week's episode.