A person who can tell a lie, with a straight face & convince anybody that they are telling the truth, when actually they are lying.
White Liars can lie without thinking twice, they don't even blink while doing so.

They are literally artists at 'lying'.

Internet persona(s) who happens to follow you and you happen to follow them back and maintain communication with and have a mutual liking for eachother whether it be friendship wise, etc. (Mutuals if more than one mutual)