you can never start something new out of something old. reintroducing yourself pretending to have never met before doesnt actually happen. from this moment on you will have awkward encounters and forced conversations. You'll sit at a table and pray that he comes over to talk to you on his break but get let down when he leaves with another girl. You'll plan out a conversation with him that will never happen just in case. You'll miss him and wonder what hes up to while he doesnt think about you. You'll wish things went back to the way they were before and will have to accept that they wont no matter how much you try.