I need a friend in need is a friend in deed

Today I dint choi Ling Yi cause got something happen. My best friend is not my friend in deed cause she dint help me when I face my problem. I just want to borrow her book for one time only but she don't want to.Then i can borrow her but she cant la. I feel very disappointed for having a friend like that. I almost want to cry out but I don't dare . Hope she will change her attitude for being so selfish . I don't want you to hurt me and me to hurt you if you keep having such a bad attitude. Thank you.