How to know if someone blocked you on Facebook?

[?]

So i have this guy on FB
Today i went to chat and opened his message, and i could not see any of his messages under his name...they where blank , i can only see my messages.
His name is dark black.
Did he blocked me , or deleted his account?

[Nancy]

It could be either.

Do a Facebook search. If a message saying the page is no longer available, he deleted his account. If you can't find him at all, he blocked you.

You could also ask someone else to do a search. If they find him, you're blocked.

[C.K.]

Sounds like he blocked you..only way to know for sure- is if you created another facebook account, look him up and see if his profile is active-if its active he blocked you, if not he could have deleted his account.