HELP!!! what is the name of this movie?

i have never seen this whole movie but my uncle was watching it and i really waned to know what it was called... it is a movie (from what i saw) about a girl who is like reall scary..she has this guy friend and whenever they kiss she does something weird one time they were making out and she bit him and started sucking his blood then she ended up killing him because he thought she was weird... and whever she met anyone and they thought she was weird she would feel hurt and kill them oh and there is a doll included like this creepy doll who always seem to show up. and the girl once was rubbung her eyes to the point that she like scratched her eyes like kinda out it was really weird just wanted to know what it was called