How do you deal with friends that have multiply personalities?

i have a friend who has this disorder, and i already know all about it, but i have no clue how to deal with him! can someone help me here, please?How do you deal with friends that have multiply personalities?
Be respectful of all parts of him. It helps to have an agreement that you are his friend, and that includes all the many ways he is who he is. You expect all parts of him to treat you with respect, too.


You will probably naturally respond differently to different parts of him, and that's normal. While you may remember everything you've said and done with him, he may not. Don't hold secrets. He has a right to know everything about himself that he's revealing to you.


A lot of people with dissociative disorders have never had relationships that are healthy and that last. You can be a constant in your friend's life, and that's an amazing gift.How do you deal with friends that have multiply personalities?
I don't keep friends who think that they have multiple personality disorder because people who say that they have multiple personality disorder are serious attention whores.