do friendship ends??

I really don't know what's happening right now. I don't know who's right or wrong. I don't know the reasons behind that CHANGE. Even my classmates don't know the story behind. The only thing I can see is my closeness to Jam. I'm not sure. Correct me if I'm wrong to those who will read this. From the start, whenever she's mad at me, she never answered my questions to her. She wont even talk. If I wrote to her, she wont answer. If I text her, she wont reply. What should I do? It is better to be her school mate than to be her classmate. At least, she won't be jealous or get mad from my attitude. She never asked sorry. I'm always the one who asked sorry even though it's not my fault. Where will I place?