Deja vu

Again it happens.Am I shy? Or do people think they can walk all over me.do u think tht somebodies misfortune in life, makes them entitled to do things tht bad friends wld do .this is the fourth time this is happening.I like a guy ,I am contemplating whether or not to do something and then 'friend x' walks in and blindly despite my subtle hints goes right after without turning around.my anger does not stem from wanting the guy.it stems from the fact tht why doesn't she as a friend turn around and ask o my friend has been since a whole year, is there a reason she does not like him or is she interested.can I try to be friends with him for her? No instead pays mo heed to my feelings continues to single mindedly go after him.now I have to play the role of a friend and supposed to act happy and excited while instead I am actually not feeling tht inside.it gets even worse when I speculate if the guy was interested in me and now since I am playing friend , he thinks I am not interested.I don't know what to do.should I talk to her.?should I tell her tht it wld have been nice for get to consider me?or is it wrong to expect her to see this from my point if view.