Move on.
honestly OP, this is the best advice
i've moved from phoenix to michigan for middle school, then to tucson for high school. i eventually lost contact with my phoenix friends, but i made some great friends up in michigan which i still talk to this day. keep in contact with your old friends, but do not become dependent on them. i was loving miserable through high school because i missed my friends in michigan and wanted to move back so much. unfortunately for me i didn't even bother to make friends with people in high school (not many, anyway) and it's hitting me pretty hard in college now.
make some new friends, but face the fact you're moving away from your old ones. you can make trips back there easily since it's only 5 hours away, but you're about to meet a lot of new people, so make as many new friends as you can