Well, I would have to say that you should probably consider letting him go. You are young, and I am assuming he is young, and as much as it may feel differently, relationships at this age don't last. It is easy to be swayed by every person who gives you attention. Maybe its easier for you to remain faithful, but it doesn't seem like this relationship has much trust. You shouldn't read his private stuff. He shouldn't play you by constantly taunting you with other girls. This just doesn't sound like a relationship that is working. I am sorry this is the way things are going, but its going to get better. You are young, you will find someone else. Wait until school starts, you will have tons of boys around you and surely you will find someone else.