Hi igit. I saw your request for help, so here I am.
First of all, is she still seeing the OM? Right now you need to take a harder stance with her. Act as if she was a neighbor rather than a friend. I know this is incredibly hard for you right now. Stick to your guns and start being the MAN.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.