Love breakup

hi , I am a student doing in POST graduate, In my college life I liked a boy , surprisely we become close friends. In short time he proposed me. With pleasure i accepted it. But in short time pf two months we got lot of conflicts because of our friends around us and he started to be at a distance. But sometimes he comes back and moves more close to me. But finally we fought and we were not in contact for past one year. since he is my own class, i want to see him daily, if i message or call , he will not respond.now he started moving close with another girl.Really its hurting very badly..I dont know what to do...