What Should I Do, What Should I Not Do...That Is The Question?

Things with my bf were pretty amazing. He treated me like I was the best, he made me so happy. I wondered how things could possibly be so good. He started pledging for a music frat. and we didnt see eachother very much any more, and things just went down hill. He started treating me bad, calling me a selfish brat for things like me getting a job with the high school band helping out and he didnt get the job, me being an only child and getting alot of things, me getting my jeans taylored, and when I found out my gma was dying, he told me 'its just a part of life, youre just gonna have to deal with it' ...after 3 weeks of this, and on Valentine's Day, he told me we were going two seperate ways (bc his fraternity and me doing drum corps this summer and being gone for 3 months) and we needed to break up to possibly save our relationship for the future when I start at his university next year- logical explanation, but idk if I should go back to him after being treated like he treated me.