Maybe cuz he blocked u or unfriended u or he made himself offline to u.
no they cannot
No, you can't see facebook Chat text in Gmail. Gmail is a mailing service only. Thus it cannot link Facebook chat with it.
you cannot open you're chat list because many people have blocked you from chatting with them. therefore you were unable to join chat because too many people have blocked you.
If you have blocked them, then you can't see them and they can't see you.
how you make your chat work on facebook it this you click where it sayed chat and you can see people if they are online or offline
Go to "Settings" and then go to the "IM Networks" tab. From there you'll see an option to remove facebook chat
If you can't see the facebook chart on your facebook then log out and log in again
you can chat with friends and see what their up to.
Normally you can see if they are on facebook chat, however the person can go offline facebook chat and still be on the site. in this case you would have no way of knowing.
Sorry, but that's not a question.
no bro .. it is impossible