it is fine, We say sweetie just to be more polite and SWEET as well.
It means "one who uses and is a member of Facebook".
it means that he/she is a facebook user ??
If got tag in a photo on there.
Sorry sweetie. She just wants to be friends with you.
Well, usually it means he likes you, or is trying to be nice.
It means which town do you live in at the moment
Your to young to do whatever it is that your doing.
I have no idea what "Harry" you are talking about, but there are basically two possibilities: (1) he is actually married, (2) he is providing false information.
It means the thumbs up symbol but it does not make one on facebook.
it means to send a private message on facebook between you and the other person so not everybody sees it.
it is just a complement
I don't know what you mean but I think you mean when you get an e-mail from facebook. Anyway I think it just says your friend has a birthday today or someone poked you and then it has the facebook logo so there are many things facebook emails you about. Hope this helped.