my best friend

Im really have only one best friend. I went to the capital for 4 years to learn go to school and to work, then I met her my friend because she lived near my dorm room. At first, time Im I was so shy and did not speak to her sometime not often, but day by day I seesaw that she was very friendly and we would often eating , chatting, and haveing fun together. We are laughter laughed and were happy without trouble. We often talked about our families, and when I was sick, she cared about me alot. I felt grateful thank for her. I was very happy until she has got her boyfriend, then she forgot me alot. Now, we don't keep in touch with each other. She exchanged her phone number but she doesn't call. dont telle

You need to be sure to use all past tense verbs when talking about the past.  It's really hard to understand otherwise.  Good luck!