Following what the others have been asking - what specifically did she say were the problems. Can you give scenarios, etc.?
What are your stats? Years M, ages, etc. It would help to figure a few things out.
Also, about you W saying she wants another man, that goes beyond just basic "problems" in a M. Is she actively looking for someone?
I echo what the others have been saying about you letting go, but in the times that you do interact, how do you act in front of her? You can't "force" another person to love you, but your attractiveness is going to come from how assertive and confident you are when you do see her.
Have you stated any boundaries with her?
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.