I did not think it could turned out like that, it was when I was in middle school, we were playing different games and I started a game which was pushing some one's chair when they try to sit, but the bad side of that game was if you push the chair more than the limit the person could fall and hurt, and actually I messed up that part of the game and I pushed hard the chair of my friend.

 Well can you imagine a teenage who fell in front of all the crowd in her class ? I felt so sorry, because she hurt herself (actually I was the who hurts her), and, the worst   part is she was so  embarrassed. I knew that we can't continue the game after that  moment. I tried to make up by helping  dusting her dress and apologizing innumerable times, however, it was too  much for her to forgive me, the moment when  she stopped  hanging out with me, I knew that she held a grudge against me. Time flew ,two three,.... years, I tried to contact her several times, to restore our friendship, it didn't work.

Despite missing my friend, I  have learnt that some times, it is difficult to bring back a friendship which is broken for different reasons, Even though you regret or apologize multiple times , I think it is better to understand a friend prior to starting any thing that is sensitive towards that person.

Thank you Marcella for your patience,
I made it up.
April fool.