Hello Jaycee,
I am sorry that you have been hurt this summer. You did not do anything wrong, please believe me. It's too bad that this happens a lot, it is all a part of learning about life. It is part of being young. You have a right to feel the way you do. You probably feel hurt, played with and then tossed aside. It is confusing too. Someone relates to you one way, and gets into your heart on purpose, and then changes the way he relates to you suddenly, without you having anything to do with it. He just stopped talking to you out of nowhere. Then one of your best friends is involved with this, to top it off. That is a terrible way for him to behave. Bummer.
I wish life was easier, but life is supposed to be challenging. Please do not despair, that means do not give up on being open to a special person again in the future. Because this can be a learning experience--what have you learned?
Maybe you have learned something about this 'other junior counselor'. If you could have him back, would you want him? If I were you, I would not. He has shown you about who he really is, and it is not a good picture. I am not saying that he is, you know, "evil with a capital E", of course. But he is at the very least too immature to be trusted. I would also wonder about his character and honesty, if I were treated like that.
You are all so young, so I would understand and at the same time, learn, grow, move on. Give yourself some space however you can in this situation so you can heal. Take yourself seriously!
Now you have had a chance to learn something, it will help you tremendously next time you begin to get connected to someone in a special way. It's natural for us to act on our feelings without thinking. Now that you are a 'seasoned young lady' :-) you can remember what you have learned and it will make your next relationship better. When you begin to have feelings for someone, that is the time to remember to use your brain as well!
Start asking yourself if things are clear between you and the boy, for example. At first it is normal to have fun and play with the early excitement, but eventually you have a right to expect some idea of what your relationship means to the boy. Some boys like to keep things as vague as possible all the time so that they do not have to be attached to anyone. They just want to have fun and they do not think about the feelings of the girl. Hopefully they grow out of this--but a lot of adult men have this problem! You must decide, next time, whether or not the boy you like is mature enough to be with you and own it--whether or not the boy is in tune with your feelings and cares about how you feel. My father told me once, "A man who loves you cares if you are happy." It's very simple, but not easy to find a boy who does care for you like that. It's worth waiting for.
You seem like a sensitive young lady, worth getting to know, who is concerned with the right values, and likes to have fun. Protect yourself from any more hurt with this boy, keep your distance, and keep some distance from your girl friend too. Let them know that you are a person with self-respect--and find some other people to associate with who can be supportive and honest friends. There's no reason to hold on to resentment for a long time--but that doesn't mean you have to pretend this never happened. The way you have been treated does mean something--and in this case, it's unacceptable. You are worth so much.
Take care of yourself, sweetie. You have your whole life in front of you, and if you remember to take care of, listen to, protect and respect your whole emotional self when you have relationships, you will have a happy life. Blessings, best of everything to you. ;-)