Aggghhhhhhhhh!! WTF!?

okay so my gf is like your not protective enough but she is the one who tell sme not to do anything if somehting happens. like for instance some guy texted her to go to the rec so we both went and he was walking out and she tol dme not to say anything. then everytime something does happen she is like wtf your not protective at all and i dont think you would do anything if you could. what do i do just let it all slide and go with it or take action cause when the same kid texts her and tells her that her *** looks good and asks why im always with her and to text him when im not there, its getting really old and im about to go crazy. what would you do in this case?