Does anyone have any ideas as to what to do in this situation?

I have a friend. I consider her my friend right now. But before, she has repeatedly done things that a real friend wouldn't do. She would be friendly to me one week, then the next week, it's like I never existed. Sometimes, I'll email her and she won't respond. What really ticked me off was what she did in December. I am still unhappy about it. Every year, our youth group does this activity at the mall called, "The Hunt for the Blue Gunu." The Blue Gunu is a person who we have to find in order to win a big prize. Everyone is supposed to team up w/ at least one other person. Well, my friend promised me the week before that she would be my partner. When it finally came, she picked someone else as her partner and acted rudely when I tried to ask her if I could still join them. I was so upset; I went home and cried out of confusion. The next time I saw her, she apologized, but I am still feeling miffed. I think I am overreacting, but I am a very sensitive person by nature.

I had a friend like that.
One day she would be mad at me and next she would act like nothing happened.
What I did was just tell her that I needed a real friend and that she wasnt being that for me.
She understood, and that was the last fight we had. 3 years ago.
But I would just talk to her when she is talking to you. Ask her what YOU did wrong and see what she says. And if you she said that you did nothing wrong than ask her why she is so angry at you. If that doesnt work than she isnt a very good friend and you should start looking for a new one.

Hope I helped!

well i had friends like that i got mad at them for doing it then i finally asked my best friend (guy) wat to do and he of course said the manly thing of punch her lol but i new not to and so i asked him seriously wat to do and he said ignore her shes a biatch (sry) tell her she needs to stop and if she doesnt she is going to lose a pretty good friend so i did and she didnt stop so i quit being her friend it worked for me i hope this helped i try lol
~*~Jill~*~