I don't want to share with my friend
But you still want to be friends?
No, I'd rather choose not to share anything than to be friends with her.
You shouldn't be so stubborn, especially with your friends. It's okay to want to keep things to yourself, but you should share good things with your friends, and they will do the same for you in return.
Screw you, friends are a dime a dozen. I can just get another one.
That's such a horrible thing to say. People have feelings and care if you throw them away. You should be more considerate of others.