aww, poor you.
its tough, i know. my boyfriend told me he used to have a girlfriend who lived 2 hours away, and she tried telling him that she didnt want a relationship to begin with, but after much discussion, they gave it a shot, but she split up with him in the end because of the distance.
personally, i dont see distance as an issue - providing you can get to you partner easily, but seeing as you are only 15, that will cost you alot of money in train journeys (or fuel, if one of your parents takes you).
im a bit hopeless at giving advice. thats the best i can give. tbh, to me, it doesnt even look like advice, sorry i couldnt have been of more help
look at mine? http://www.wrongplanet.net/postt86020.html