Building Up the Courage
I was working at a wedding when I was younger, running the bar at the reception. We were told that the reception would begin around 4pm. It was only about 3ish, and one of the male guests was already sitting there drinking.
I asked if he was not joining the ceremony, to which he replied something along the lines of “I will when I have the courage.” He downs his drink and leaves. Ten minutes later he comes back, looking extremely disappointed.
He orders another drink. Less than 30 seconds later, another guy (who turned out to be the groom), walks in, punches him in the back of the head, and leaves. This dude just picked his drink up and sipped it further.
I eventually found out that this fellow had downed his drink, walked into the ceremony, publicly admitted to sleeping with the bride at her bachelorette party, and then ran back to the bar.
He was never invited to the wedding, but had just shown up to inform the groom. He found out where the wedding was, suited up, and dropped the info on everyone mid-ceremony. Story credit: Reddit / STUNSLAVE