cant see friends facebook message but can see everyone elses?

[Jeanne]

I think your friend's message is going to "Other folder" that is why you wont see it in main message list. If you see a message in Other that you’d like to move to your main messages view,
simply open the message (If you cant see your friend's message, enter the friend's name in the field on the top of message page and search it.)
click Action
select "Move to Messages" from the Actions drop-down menu.