Obligatory: Use Secret Conversations[1] if you have to use Facebook's Messenger. [1]: https://www.facebook.com/help/messenger-app/1084673321594605/ https://www

Obligatory: Use Secret Conversations[1] if you have to use Facebook's Messenger. [1]: https://www.facebook.com/help/messenger-app/1084673321594605/ https://www.facebook.com/help/messenger-app/1084673321594605...