[ Lesbian, Gay, Bisexual, and Transgendered ] Open Question : lgbt: I'm going though a bad breakup?

last week, i dated this girl online. we talked for a day, then the next day, we decided to be in a relationship. our 'relationship' lasted 2 days. she was a lesbian, 15 years old, and im bisexual, 14 years old. i told her that i was confused and i wasnt sure if i was bisexual or just bicurious. i still don't know. anyways, she said she respects my feelings. so then, i broke up with her. because, she said someday, she wants to marry a girl. and i said, that i would marry a boy (man) when we get older. she we pretty much agreed that we're wasting time dating each other. so now, we arn't talking anymore, and she blocked me, or maybe even deleted me off msn and stuff. i feel horrible! she said that she's been hurt by bicurious girls before and she doesn't want me to hurt her like the others...but i did. im so depressed now. i have no clue why. i was happy in a relationship with her. we talked for hours. we made each other laugh and talked dirty and stuff to each other. i just.. dont know. i could email her and tell her how much my life sucks. but, she wouldnt forgive me.. i just know. :( what should i do?