I'm sad you're feeling like you have no one to turn to. I try to keep up with you here the best I can, although I don't always respond to all my friends' threads. I have a lot going on here.
Are you going to try to go to college when you graduate? That will be a new place to meet people and start over again, if you choose.
My husband was sad he was an only child. He wanted two children, so they wouldn't be alone. But sometimes I think my two guys would have liked to have been onlies. One time my younger son said he wanted to trade his brother in for a parrot.
You do have friends here, anyway. We can't officially give you a real-life party, but we can celebrate your graduation!