[s9e22] The End Of The Aisle • Confirmed

Lily vows to always tell Marshall when he has green stuff in his teeth.

: Barney witnesses Marshall and Lily’s messy, honest life and decides on a single vow: to always be honest with Robin. He immediately confesses that Ted was the one who found the locket. Marshall and Lily’s Real-Life Vows [S9E22] The End of the Aisle

Marshall promises to stop shouting at Lily while she is "dropping a deuce". Lily vows to always tell Marshall when he

: Barney stays true to his word and actually brings a real bear cub as the "ring bear". Marshall and Lily’s Real-Life Vows Marshall promises to

Future Ted closes the episode by noting that while no one can vow to be perfect, they can promise to love each other with everything they’ve got, because "love is the best thing we do". The End of the Aisle | How I Met Your Mother Wiki | Fandom

: Instead of a grand speech, The Mother simply advises Robin to take three deep breaths. When Robin opens her eyes, Barney is there.