Spill your purse
To put all your feelings out on the line in an undignified or embarrassing manner. To reveal embarrassing secrets about your wants/hopes/dreams. To let your mask down.
You really like to spill your purse when you get drunk.
Mike spilled his purse out proposing to Donna, and she still turned him down.
Mike spilled his purse out proposing to Donna, and she still turned him down.