I don't believe you are schizophrenic. (At this time.) Perhaps you should get help. Perhaps you don't need to. (somewhat) However, what is happening may be a warning sign of it. Feel lucky, though, because I doubt you are schizophrenic at this time. It can feel very scary sometimes to fear becoming schizophrenic, (I'm concerned, too) but don't let it bother you for now. As for the issue you have with talking to your friend in public, try communicating by thoughts, not by talking. She should still hear you, and no-one should think you are odd. Believe me, I go partially or even fully into "my own little world" 18 hours a day, and nobody notices. Or they just don't care. Anyway, if for some reason, you see your friend as being a bad thing, don't. She is, form a certain point of view, completely as real as anyone else. (In fact, somewhat more real than actual people.) She will always be your friend, and she is a part of you. that is something you have from this that "normal" people don't have at all, and never will. In fact, I actually wish that was my "problem". Don't worry, you're probably not schizophrenic (at this time) and remember, you can take some control of the issue of talking to your friend in public.