I'm having girl problems?

Ok, so about 4 years ago i was in 8th grade when i met a very nice good looking girl that a shared alot in common with. At the time she was going out with a good friend of mine so she wasn't available.We ended up talking more and more everyday and i really liked her. Then i got sent off to military school halfway through the school year. I wasn't aloud a phone there for a couple of months. When i got back in contact with her she was single. After about weeks of talking to her on my phone at military school, which was 400 miles away from were i live in cali I finally a had the to ask her out. She said "yes and that she really liked me but things were complicated sense i was so far away and that we should just wait until summer", So i agreed. When summer finally came and i returned home i asked her out again but she told me that she had some problems in her life and she couldn't be in a relationship at the time. I was sad but was willing to wait and help her with any problems.We still talked daily and it still seemed liked she really liked me.Then about 3 weeks after she told me all of this i found out that her and my best friend had hooked up and are now going out. I was extremely saddened by this because my best friend and the girl i liked for over a year basically played one on me. They went out for around 3 months be for breaking up. After that horrible summer i was sent to another military school were i spent 9th grade year at. We ended up talking on and off again like she hadn't just broken my heart. I still let her be a part of my life for the next year or so up to 10th grade. I haven't seen or talked to her in over a year no. I just cant seem to get her out of my head and still have feelings about her.I had lots of chances to get with her after 9th grade but i was just so afraid of rejection from her after what she did and was so confused about love in general. I haven't found a girl i could evr compare to her and i want her back in my life. I just don't know what i should do about all of this. HELP!!!!