Kelly Clarkson - Walk Away Lyrics Meaning

Hah, she wants the guy to fight for her. Not to be a wimp and scared of true love and commitment. She's saying if he can't give her that then why is he still with her? It is straight forward, I agree. But she isn't saying go away I don't want to be with you. She's doing the girl thing and saying make a commitment to me already, cause I don't want to wait around for you.