How do I have my ex back

O.k. Well my boyfriend break up with me yesterday night(I cryed so much) and he said we can be very good friends(but we cant be friends at school because of my friends) and I can go out with a guy…and he said “I still love you a lot”(he break up with me because of my friends my friends hate him) so he said “friend” and I cryed and said friends(told him on msn so he cant see me crying) and he said “in school its good to be fun and all if we are not going out” I said no its not he said yes its going to be better for you your going to a now school…(im going to a now school with 2 of my friends and its has school)and if we are going out people will not hate me but they will hate you I said…ok But I know my friends care but to much care how do I have my ex back and make my friends back off(and my friends can be really mad like hell)help me please my ex will not go out with me because of my friends he said I will have a good life if people do not hate me I told him people cant be mad or hate me for life but he said “just friends please” I know whats best for you.but he thinks its best for me its so not im sad like hell I hate my life.someone please help me I need abvice and help…my life is bad.