How to let go of a girl who got married, loves me but wont take any step towards making it happen.?

last year in april,i fell in love wid a girl who was engaged and getting married in may. I never disclosed my feelings for her as i knew i was wrong but i had no idea she also felt the same for me. I shopped wid her, had lunches, went out, we had an awesome time in those 15 days we were together and inseperable. Then on may 7th she was leaving home for the wedding, i was there wid her bags and cud see some tears in her eyes but i thought its a normal bride psyche so i was busy in trying to lighten up the mood and make her smile.She went home but used to call me everyday, everyhour. i still didnt get the hint. On wedding day, i saw her and wen she saw me she caught hold me and asked me to stand besides her in front of her guy. i was embarassed and left the place. She still kept calling me through her honeymoon once a day. Wen she came back we both confessed to being madly in love. Now the situation has passed one year, i still love her madly and can do anything for her, and she too loves me a lot but she says she cant do anything dat will harm her family's reputation. In october last year she even tried to divorce dat guy as she couldnt forget me, @dat time i supported her, went against my parents, gathered close friends for the big task. But at last moment she backed out, this happened 3 times. She made me ready n then left me alone. Now since last 6 months no attempt has been made but we have not forgotten each other. I still love her a lot and she too loves me a lot but she clearly says she cant come to me bt will alwys love me. She has no feelings for that guy bt still is living wid her so dat her parents name doesnt get spoiled.But what i have done?...I cant seem to forget her . We work together and i sit merely 4 feet away from her cubicle and i have to see her everyday. I get irritated wen she talks to her husband in front of me.I cant stand dat guy coz he knows she loves me bt still stays wid her as he feels some day she will love him. bt she says she is just doing a compromise to save her parent's reputation in her community as she was the one who agreed for this marriage. But i cant help wen i see her crying alone sometimes as clearly shez nt happy wid him but she doesnt want me to wait either. I love her a lot and it seems i cant love any1 else more than her. she was everything to me, i fought wid my parents for her even though she didnt stand up for me. How to let her go and forget her when i love her a lot.It hurts a lot when she says she loves me but have to stay put with her husband who she has no feelings for. How do i forget her coz i love her a lot and i think about her every second of the day for last 1 year. My health, career everything is affected. I just seem to have stuck up with her..plss someone show me the way out of this!