There is an old saying that says "you never know someone until you live with them". Just tell them that you think that you weren't ready to share your space to that extent just yet.
the sooner you do it the easier it will be and its probably going to be pretty devastating
if it is not your own house; then you can leave the same by saying 'i am not interested and somehow this relationship may not work'<br />
if it is your house; mention you have some close family person coming in and hence the concerned person will need to vacate and then express ' i am not interested after a few days. reasons if you tell truth and he hurts you? if he is violent type.<br />
lol search a good guy for self and test before live-in.
Change the locks--or just be honest and as kind as you can be.
Very... Very carfully. But you have to sit down and talk with them, otherwise the relationship will sour. You have to explain why you dont want them to stay with you, and be firm about it. Be cafull of their feelings though.... Good Luck!
Oh goodness..I haven't the slightest idea. That is why I have put it off as long as I can.