So theres this girl that I have been friends with for about 4 or 5 years now. Ive known her since she was fourteen and i was 16 at the time. I was introduced to her by my best friend(who still is) because it was his girl friend. When i met both of the they where in love and he was even the one who took her virginity and she was his first love. So automatically she was pushed into the just friends category and i never looked into it. But over time she became more than just a friend she more like a little sister that i used to protect and she would confide in me. They eventually broke up but they were still my best friends and i couldnt betray them by wanting more than just a friendship with her. Even though i thought about it from time to time. Loyalty is something that is very important to me and i would never cross it just for personal satisfaction. When i went away to boot camp she would write me tremendously long letters about how she missed me so much and couldnt wait to see me again. With poetry and hearts everywhere on it. So even as time went on we still used to talk alot and would get very close but i would always interrupt this by starting a argument over something small and stop talking to her for a few months so everything would die down. but we recently starting talking again and this time was the "worst". We saw each other everyday for about for two months straight. But there was never any flirting or funny business never even a joke about sex. I took the little sister role very seriously and supposedly so did she. But then about a month ago she just stops answering the phone when i call or text messaging back or anything. Its like she forgot i even existed. But sporadically she will text me i miss you and we have a short conversation and then i wont hear from her for a couple days to some weeks. Lol i know thats alot but could somebody please help me because im stressing like crazy and im even losing sleep