Don't waste your emotions on someone who doesn't even care about how you feel. Let your heart find love again.Slowly move out of his circle and be free, give yourself the chance to meet new people, enjoy new friendship and explore the possibility of finding someone who would love you sincerely, someone who can share your dreams and maybe forever.
If you want to forget someone you've got to let someone help you. Give yourself a chance again. Don't remain weak, there's always someone whose ready to love you better.