I can't complain...I was part of a four year relationship all through highschool, I left him (for being a jerk) and a month later I was with my new boyfriend...we're 8 months and counting...and that's long-distance.
You are young (as I am), so maybe your fellow date-ees aren't mentally on the same path as you, and lemme tell you
THAT sucks.
If that's the case, the only thing you can do is wait it out. (I don't necessarily reccomend trying to date older folks, cause age doesn't always mean mentally mature)