There are a few different ways to block someone on Facebook Messenger. You can block someone from seeing your messages, or you can block them from seeing your profile. To block someone from seeing your messages: Open Facebook Messenger and click on the person’s name you want to block. Click on the three dots in the upper right corner of the conversation window.
Video – How To Block On Facebook Messenger
Now that you know how to block someone on Facebook Messenger, go ahead and do it! Remember, you can always unblock someone if you change your mind.