[s9e22] The | End Of The Aisle

: Just as Barney has a last-second panic attack at the altar, Marshall delivers the eighth and final slap of the Slap Bet , officially ending the years-long gag.

: Ted reveals he retrieved the locket from Central Park Lake but gives it to Barney so Robin will believe it came from her groom.

: Instead of a grand speech, The Mother simply advises Robin to take three deep breaths. When Robin opens her eyes, Barney is there. [S9E22] The End of the Aisle

In a pivotal series moment, Robin attempts to flee the wedding and literally crashes into The Mother.

: Robin quickly realizes the truth—Barney’s initials are "B.S." for a reason, and he lies about everything. She briefly considers running away with Ted, who firmly refuses, telling her he is "not that guy anymore". The Meeting: Robin and The Mother : Just as Barney has a last-second panic

: Barney stays true to his word and actually brings a real bear cub as the "ring bear".

: 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 When Robin opens her eyes, Barney is there

While Barney and Robin prepare for the aisle, Marshall and Lily realize they have broken almost every idealistic vow from their 2007 wedding. They decide to update their vows at the altar to reflect their current life: