Girl is creeping me the **** out?

she sounds a bit obsessed. ok maybe more than a bit. or, its her idea of "jokes". either stop talking to her and ignore her, or, if you see her on an everyday basis, humor her, laugh with her, and just be like, "awww ur a good friend" drill into her brain that u see her as a "friend" . she'll be a bit MORE obsessed after that, or hurt, but, it will disappear after a while when she realizes ur not budging :)