Wedding vows give brides and grooms the chance to express what's in their heart of hearts. But sometimes those beautifully crafted sentences come from far less sincere places.

Below, 13 users on Whisper -- a free app where people share their secrets anonymously -- cop to the cringe-worthy ways they came up with their wedding vows, if they even managed to get that far.

For more wedding day confessions, check out the Whisper app.