THIS.
From what I've been reading, it sounds as if the OP wants something she can't have. We all do that....
However, (keep in mind I'm MUCH older than you), it is definitely time to move on. You said you were going to camp also. Perhaps being a single person will be more fun when meeting new friends. There will be nothing holding you down, no ties or commitments that would keep you from making plans with anyone else. I've had my share of break-ups, and to be honest, even if you do get back together, it will never be the same as it was when it was "good". You will always have the break-up as part of your history. That would be very hard to forget, and since you are a worrier, I doubt you would stop thinking/worrying about if he planned to stick around. Don't torture yourself with this choice. MOVE ON. You will always remember him as your first love, and nothing will change that. When you are my age, you will look back and see that you have loved many, many people (not just guys). Don't worry so much. Have a FUN summer.