Well that's obvious he's hiding something
Because maybe they are trying to hide things from you
Forget about it. Obviously not a friend at all.
well may-b he is just trying to keep you from getting hurt
It sounds as though he is still hoping to make the relationship work if he accepted her friend request. Her pattern of behavior may be indicative of a number of things, but he would be wise not to put too much trust in her.
yes
He would be your fiance. Example: This is my fiance John.
Because he is the worst kind of person: faithless, friendless and completely untrustworthy. Who's responsible this?
Facebook, My friend. Or you could just txt her.
what would be any legal reason preventing my fiance and I from living together
Yes, you can. It doesn't mean that you want to be with them. It means that you care and are concerned about them. Do not confuse it with the love that you would have for a boyfriend, fiance, or spouse.
WOW! This must be my ex-fiance! Clearly, I couldn't work it out w/him but I would be amazed if you figure that one out.
You may still be a friend to her. I wouldn't worry about it too too much.