I'm obssess with someone even though i know full well its wrong and that they hate me?

I know how you feel. I have had dreams like that even if im not thinking of the person or thing. Theres really nothing you can do, i dont think the dreams mean anything there just dreams, somtimes there unexplainable. If there really bugging you try to talk to a friend or someone about it. it might help you. and if that dosnt work im very sorry, i could only imagine how that feels =/