coldfusion, sounds like a painful situation for you, but it is by no means weird. It is common for people your age to try a number of partners, to even be fickle. It just ain't time to settle down yet. Two years is a long time to be together at this age. I think your GF is just spreading her wings, ready to fly. I know this doesn't help, but try not to take it personally. She is very young. Who knows, maybe after you both have matured a bit, gone to college, etc., you will rediscover each other. In the meantime, cherish the time you have had together, and enjoy life!