Why is my friend being such a b****? Or am i being selfish?

My friend always treats me like utter crap and i always put up with it. Recently, at the end of the school dance my highschool and she told me i shouldve said yes to a boy who asked me to the dance. I asked why and she said because The guy you like will never like you. So, predicably, i ran away crying. She keeps trying to apologize but im at my edge. I tood her tears are worth something and i dont owe her anything. Is it me whis being selfish or her whos being a b****?