Friend's name is written in black. Please help!!!?

[Nelli]

When i go to search my friend on facebook, i can't find him, when i go to my friends list i see him without a picture with blue letters, when i click on it, it says that the account is deactivated, when I go to my messages and find his messages i see his name in black letters without a picture. Is it deleted or deactivated? I know I am not blocked.
By the way, when that account was just gone from facebook, i could search him and saw his picture, if i click on his account, it says that it's a wrong link or page may be removed. Please help me I think it's just deactivated, but I wanna be sure, because those black letters makes me worried Help me!