I need advice... I'm unconditionally in love with a married women.

We were once the best of friends until certain situations led to her finding out my feelings for her. She decided it would be best for the both of us if we didn’t speak or see each other anymore and because of this, I am going absolutely crazy. It’s been over a year since I’ve looked into her eyes, heard her voice, or seen her smile and I’m beginning to forget how it felt to be surrounded by her beauty and that’s just something I never ever want to lose. There’s this thing inside of me that just knows that we could be perfect for each other, she must have been put into my life for a reason. I need this girl and I have no idea what to do to get her back in my life and it’s killing me. Is there anything I can do besides just sit and wait for her? Even to get her friendship back would be more than enough for me. I just don’t want her to be the one that I let slip away.