Obviously, it's not exactly normal. But how would you feel if someone you were or are interested in you found out that he/she talks to themselves? I do that, and I'm not sure where it came from. All I know is that I can't seem to stop myself very well from doing it.
Most Helpful Girl
If it's not in public places where it is really awkward, like out loud in the subway or in class, I'd think it's a cute quirk. Might actually make me like him more. I do it too sometimes when I'm alone without realizing :)0