Do I end our 7 month relationship?

I have been wanting to rant about this for so long now, so I am a freshman in highschool. My boyfriend is a junior. Before anyone gives me anything for that, when I met him everything felt right he had such a sweet heart and was anything I could have asked for. About 2 months go by and he stops drinking and smoking. I know that I shouldn’t be doing this but sometimes I did when going on vacations, hanging with friends, etc. but he tells me I need to stop or else he is going to end everything with me. He also starts trying to take me away from my 2 best friends and thinks they are bad influences. Whenever we get into fights he threatens to break up with me and the fights over somethng so tiny end up being the end of the world to him. When I am upset, I have to end up saying sorry. I am ALWAYS wrong. We fight a lot, I really like him but I am so confused on what to do. It would break mine and his heart if I were to ever do such a thing but it is emotionally exhausting for me. I want to be like how I used to be, having fun with my friends and all. The worst part of it is, when we aren’t fighting we are so good together. But the catch is that we fight a lot. And I don’t know if he will change. (He also had asked me to prom already which is a few months away)) and he always talks about the future and having kids together.