How to Delete Messages Sent to someone On Facebook
Step 1: Check in to your Facebook account.
Step 2: Click the "Messages" switch in the menu on the left to open the Messages page.
Action 3: Click the conversation which contains the sent messages you wish to delete. Facebook presents conversation strings in date order with one of the most recent at the end of the page.
Step 4: Click the "Actions" button on top of the conversation display.
Tip 5: Select "Delete Messages" from the pull-down menu.
Action 6: Click to make it possible for the check box close to each sent message that you wish to remove.
Step 7: Click the "Delete Selected" button and after that click "Delete Messages" in the confirmation pop-up window. Facebook eliminates the picked messages.
Idea: To delete an entire conversation, consisting of all obtained as well as sent messages, click the "Delete All" option after opening the "Delete Messages" display.