Have you ever hurt someone?

I have hurt so many people already. Some of it are intensional and many are not. I was a kind of person who thinks that everybody is my friend. I always make fun of my friend or someone that I have just knew for few days. I am not aware that i have hurt them on the things that i said. I love to joke without limits. I intensionally hurt someone when I feel that I was also hurt because of him/her.

I think I did it many times. I dunno why, sincerly, because i never give the time to let the people say : you hurt me. I always apologize before. I always apologize when I think to have done something wrong.