Please help me to check my grammar.

Today I would like to tell you about my best friend, first, I wanna tell you that best friends are very special people in our life.They are the first people we think about when we make plans, they are the first people we go to when we need someone to talk to. Fortunately, I have had a person like that. She is Mary, she is the same age as me, I first met her thanks to my English teacher. At that time I didn’t feel for her, but after a few times hanging out together, I realized that she is a very kind and generous human being. She is always willing to help everyone without conditions. She can stop in order to feed a stray dog on her way to school although she knows she will be late for school. She only thinks that dog need her helps. We can reason with together for hours about an issue with no boredom. I hope our friendship will last forever.