A lot of times in my dreams, usually my favorite ones, a girl/boy with long bleach blonde hair follows me wherever I go. Is she/he possibly my spirit guide? Any help?
From your description I don’t think so. You say that they always “follow” if they were guides they would lead. To know for sure though I would examine the intuitive feeling that you get from them. With all my characters whenever, I encounter a new one, I’ll ask myself “Who is that?” then usually I’ll get a name or feeling about this character that lets me know who it is.
My guess is that this person represents something about you. A hope or a fear, something like that. Anyways, next time you’re lucid and notice them following you, turn around and ask them who they are, I’ll bet you get alot out of the explination. 