Connect with Facebook

If I log out of my account and connect with facebook, it doesn't reconnect me using that account, it makes a completely new account.

I'm currently up to JOSEPHTHEUNSTOPPABLE4, I also have JOSEPHTHEUNSTOPPABLE3, JOSEPHTHEUNSTOPPABLE2, JOSEPHTHEUNSTOPPABLE1, and JOSEPHTHEUNSTOPPABLE. I can't play with my friend's games, 'cause everytime I join, I'm a new account.