Delete facebook messages

SOURCE: HOW DO YOU SEND A PRIVATE MESSAGE TO A FACEBOOK

Under their picture on their profile page you can click on send message. and it will open up a message box.

SOURCE: I cannot read my private messages on facebook

What you need to do is go onto your account setting, then onto account security and untick the box 'Message Privacy'

SOURCE: Can deleted messages on facebook

I don't think they can be retrieved. I'm pretty sure once you delete a message on Facebook, it's gone for good since there's no trash can.

SOURCE: i cannot open my private

Use a Secured Web browser.
Use a Firewalled connection for your internet connection.

SOURCE: i need all my personal messages deleted from facebook

YOu cannot delete facebook messages. You can only archive them. If you go to "see all messages" you will land on the page where all your messages are. There you will see an "x" on the right side of the messages. Click on them.