Tears in Left Corner

Going back to the past should be for the sake of redemption. But with only incomplete memory, how can I distinguish right from wrong? The person I once loved the most, in the end, became the person who left me with nothing. The two people I wanted to love with all my heart changed their fate because of me. He said that my smile was the only happiness in his life. So, after he removed all the obstacles between us, I still smile so brightly, However, But he can never wipe away the tears that slide down my face when I smile.