How To Pretend You Never Saw Someone'(s) Facebook Message?

On Facebook, when someone send a message to you, Facebook tells the sender that you have already seen their message, including the details of the exact time you’ve seen it. Sometimes, you have read message but you don't want reply. And you still want they think you haven't read it because you don't want hurt them. How to do that?

Step 1, you have to login Facebook, please click here:

Step 2, click here and go to Facebook messages:

Step 3, type people name who you want Pretend Unread Message in Search Box:

I mark messages as unread Nida Fatima:

Step 4, click Actions ~> Mark as unread: