Lily Aldrin (Alyson Hannigan) is a kindergarten teacher and an aspiring artist. Lily was originall engaged to Marshall before they broke it off for her to try and be an artist in California. However, she returned to him after her fellowship ended and the two quickly married by the end of season two.
Marshall: Just a Burger? Just a burger. Robin, it's so much more than "just a burger." I mean...that first biteâ€”oh, what heaven that first bite is. The bun, like a sesame freckled breast of an angel, resting gently on the ketchup and mustard below, flavors mingling in a seductive pas de deux. And then...a pickle! The most playful little pickle! Then a slice of tomato, a leaf of lettuce and a...a patty of ground beef so exquisite, swirling in your mouth, breaking apart, and combining again in a fugue of sweets and savor so delightful. This is no mere sandwich of grilled meat and toasted bread, Robin. This is God, speaking to us in food.
Lily: And you got our wedding vows off the Internet!?
Barney: Guys, I just tasted an amazing caterer.
Lily: We already have a caterer.
Barney: Oh right! You're getting married. [to Ted] You see what I did there?