I believe that this song is called Without You by Marsha Ambrosius.
What is the song called by a female r&b singer where in the chorus she sings you can call me crazy.....without you?
Yeah Marsha Amborsius ft NeYo has the lines "you can call me crazy.....without you"
The lyrics you are talking about are in the hook:
I'm looking in the mirror
I'm all in my feelings
Got me f**ked up out here
Without you (without you babe)
Yeah you can call me crazy