I never bothered to confess to anyone (all my relationships that came to be I got confessed to first) so it's all embarrassing.
Mainly with my 4 years long high school crush at different intervals trying to confess only to have to make dumb excuses to walk away or pretend I didn't call her name. I must have looked like such a dumbass and it was even worse cause we were friends but I'd get so flustered I'd react like some kind of stranger.