Faye

After Don gets lucky (of the lowercase variety), he returns to his apartment where Faye is leaving a note.

Janet Turley: Mad Men Season 4, Ep 11: Life and Death -- It's All Just Business Janet Turley 2010

If we can fire a teacher, or mar 45 years of service, as in Faye Ireland's case, we can collectively feel as though we have done something, we've tried to make a difference.

Jennifer Havenner: Let's Address the Real Problem in Education Jennifer Havenner 2010

Faye is practical but insensitive, assuming their failure when he plans to fight.

Samantha Zalaznick: Mad Men Recap: Welcome to My World Samantha Zalaznick 2010

After Don gets lucky (of the lowercase variety), he returns to his apartment where Faye is leaving a note.

Janet Turley: Mad Men Season 4, Ep 11: Life and Death -- It's All Just Business Janet Turley 2010

Faye is practical but insensitive, assuming their failure when he plans to fight.

Samantha Zalaznick: Mad Men Recap: Welcome to My World Samantha Zalaznick 2010

"Faye is a certain kind of a woman we haven't seen before on the show," Buono says.

Mad Men Finale: How Long Will Faye Stand Beside Don? 2010

Faye is good for him, and cares for him, but with her questionable background and Don's reckless trust, something's bound to go wrong.

Samantha Zalaznick: Mad Men Recap: Help! Samantha Zalaznick 2010

Faye is good for him, and cares for him, but with her questionable background and Don's reckless trust, something's bound to go wrong.

Samantha Zalaznick: Mad Men Recap: Help! Samantha Zalaznick 2010

Faye is not a mistress — she's his first real girlfriend.

Mad Men Finale: How Long Will Faye Stand Beside Don? 2010

Faye is practical but insensitive, assuming their failure when he plans to fight.

Samantha Zalaznick: Mad Men Recap: Welcome to My World Samantha Zalaznick 2010