Things You Didn't Know About HIMYM

2)

2. Three of the main actors on the show have had their significant others in multiple episodes.

Husband of Alyson Hannigan, Alexis Denisof, plays Sandy Rivers;

Cobie Smulders boyfriend, Taran Killam, plays Gary Blauman;

and David Burtka, fiancé of Neil Patrick Harris, plays Scooter.