How I Met Your Mother Season 3 Episode 19: "Everything Must Go"
Lily and Marshall attempt to raise money to repair their floor by selling off Lily's designer clothing. Lily also discovers an alternative use for her art. We find out it was Abby (Britney Spears) that was Barney's relationship saboteur.
Abby and I are in love. Not hot, passionate love. Couple love! You know, movie night with my girlfriend then waiting for her to go to bed so I can steal one pitiful moment of hollow ecstasy by the cold blue light of my computer monitor