Season 5, Episode 1: Definitions
Original Air Date—21 September 2009
As Ted begins his new career as a professor and is about to meet his future wife, Lily forces Barney and Robin to have "the talk" and define their new relationship.
Season 5, Episode 2: Double Date
Original Air Date—28 September 2009
Ted goes on a blind date with the same woman he went on a blind date with seven years ago, and Barney and Marshall find Lily's stripper look-alike.
Season 5, Episode 3: Robin 101
Original Air Date—5 October 2009
When Robin fears that Barney is cheating on her, she soon discovers that he is spending his evenings with Ted learning everything there is to know on how to date her
Season 5, Episode 4: The Sexless Innkeeper
Original Air Date—12 October 2009
When Lily and Marshall realize that Robin and Barney are the perfect...