Barney realizes he has heartfelt affection for Nora, and he thinks that something is wrong with him; and Robin dates a guy who acts like a do...
Marshall becomes obsessed with saving the environment after seeing a documentary on garbage; Ted runs into The Captain; Barney admits he has feelings for a woma...
Barney declares Feb. 13 a holiday for desperate women; Marshall receives a Valentine's Day surprise from Lily; Zoey and Ted work on figuring out their relationshi...
Zoey arranges a date for Ted with her cousin, played by Katy Perry; and Ted realizes he has feelings for Zoey, and tells his friends he needs an interventio...