Dazzled and confused?

Well it started like this...we were very good friends but suddenly we both started to feel attracted to each other i mean i have a boyfriend now and i love him very much,but this thing i feel for her is mixture of pion,love,ual attraction and gentle feelings.She was my poetic inspiration and model of platonic love and we did nothing more than a frendly kiss in mouth.We were both shy by nature to take the initiative,we are both Virgos.She was very commited to me and she liked my poetry that i wrote for her.But 2 years ago she met a boy and she suddenly became cold,frigid and she tottaly messed the things up with me.She stopped calling me so often and i tought in some way that she wanted to hurt me by dating this guy,but i did nothing to be punished for,and becoase of that i became very confused,i could sence that she loves me but i felt trapped in and i don't wanted to do anything till be sure that i really love her.So we had fight and i told her that i don't want to see her anymore.But few months later i realize that i miss her to death.I started to send her messages,full with any kind of emotions:anger to her behave,love expressions,poems,i begged her to see me and gave me a chance to apologize in person...but i got nothing but silence.I wrote her a letter with apologies telling her that i love her and i will fight for her and i will try to be an better person but she didn't answer.I think that she might be the love of my life,i don't care if she is a girl,i have never been into girls and i am not ually attracted to any other girls but i don't know why i fell in love with her soul and mind so much.I wanted to go after her but i am afraid of scaring and disturbing her but i am so desperate to bring her back in my life and i don't know how becoase i have tried everything possible and i am prepared to do everything,even stand up to my parents if she asked me to.I saw a picture of her and her boyfriend the last summer,after our fight and she wore the neckless that i gave her as a present,i wonder if i that means something... i am affraid that in her mind she is convinsing herself that maybe if she ignores me all the time i finnaly will forget her and move on and this way is the best for both of us..she lives in another city,has boyfriend,conservative parents,conservative friends who fills her head with conservative ''right straight'' toughts and i know her and i know that she might still have feelings for me but she wants to press them deep into her heart just to fit in with life that her parents wants for her and we will miss something very beautiful that will may makes us unhappy for the rest of our lives.So please tell me what to do...do you have any ideas how may i get to her cold heart and what should i do to bring her back to me? thank you