Facebook not letting me message a certain person?

[Goob]

Hello, my facebook seems to be messing up on messenger, web, and the facebook app for iphone. I tried, restarting it, i tried deleting the apps, and redoing it, and logging out, logging on, and last but not least, deactivating and reactivating.
Theres a certain girl i'm messaging, and for some odd reasons who messages never pop up, or show. I can wall her, and her messages work perfectly fine with me. Note, i'm having no problem messaging anyone else. I can only see her messages if i legit spam her, then delete it, and click it again to see it.
Has this ever happened to anyone? and does it get fixed or something.. I need to know, because the girl it's happening with is a close friend, and this is our only source of interaction.
I can message everyone else, it just won't work properly with this one girl.

[karmamagic]

try making another fb account and test it yourself

[Maka]

She doesn't like you and she blocked you.