Guys are ?

She is not going to listen to you - because she HAS to know that the guy has issues - yet she is still with him. I am sure you have already told her thaty he is a jerk - still with him. I am sure you have already told her - look, you guys never hold hands or act like you are together - she is still with him. Some girls are like "duh" until they finally get it - but it's only within them. Save yourself the frustration - tell her what you think and then focus on your own stuff.