How did it happen?

It was over a year ago, but why or how still bothers me to this day. I was dating this girl "Lana" for about a month, I had been try to get a date out of her twice a year for about 5 years, when I finally let it be known that I have given up on girls in my school, she gave me a ring and asked me to be her boyfriend and foolishly I agreed. I respected this girl as a woman, and I loved her. Well, everything seemed fine(except my cell phone minutes from so much talking) I still remember getting a call from her friend saying that she was breaking up with me, I remember her friend sayin that she was sorry for the bad news, So was I. What happend that I didn't see, and why did she do me so much disrespect as not facing me like a true woman and tell me it was off? I am over it now, I poured my feelings into sports and became quite good. thanks