Girl:
You said you would teach me how to play chess and help me defeat my opponents, and I believed you.
You said you were sincere for me and didn't want to lose me, I believed you.
At the end of the chess game, I lost, and then I realized that my opponent was you, and I laughed.
You have everything, but you say you are doing this because you are afraid of hurting me. I laughed.
I should have guessed it, but I refused to doubt it, just because I trusted you. I was wrong.