First, you'll want to go over your living habits. If your best friend tends to leave clothes all over the floor and you're a big advocate against clutter, this may pose problems in the future.
Next, you should go over your lifestyle as well as your jobs. If your friend is a night owl but you have a job that requires you to wake up early, this might not go over well.
Finally, it's important that your friend has the right qualifications to move in. You should ensure that he or she has a steady source of income to avoid fretting over bills and rent later down the line.
Speak to a psychic if you're thinking about asking your friend to become your roomie, but you're unsure of the decision. In the end, a psychic reading may reveal that you're better off keeping distance between the two of you.