''The Goodbye Gossip Girl'' season 2, episode 25
Most satisfying-joyful moment: Chuck finally says ''I love you''
With two seasons of will-they-or-won't-they teasers, Chuck finally came through. After traveling Europe just to pick up some of Blair's favorite things, he gave her the present she'd really been waiting for: three words, eight letters.
Chuck: ''I love you too.''
Blair: ''Like, can you say it twice? No I'm serious, say it twice.''
As the final season begins, we look back at key scenes that helped make fan favorites of this Will They/Won't They couple