You and I started walking back to back. We agreed that we would look back when we reached the 100th step. If we could still see each other, we would forget all the unhappiness in the past and start over. If you can't see each other, keep walking and never look back! When I took the first step, something called sadness filled my heart; there were only ninety-nine steps left in our love journey, how did we get to where we are today? Once upon a time, we walked together in the rain, and we didn't feel cold even when our clothes were wet. Once upon a time, we breathed in the heat and ate ice cream in the snow. When people looked at us in surprise, we laughed.