She_Is_My_Sin, I think you should go out and get some ice cream, or do anything else that's fun, even if you did it on your own.
On my eighteenth I just arrived in a town on my own, and I had no friends yet. So I went to get some smoothie and get a membership in a DVD rental store. The girl in the DVD rental store is the only person that said "Happy Birthday" to my face. A bit sad, but I think I shouldn't see it like that.