history: My sister went to the movie with my best friend instead of me. My sister took my best friend to the movie instead of me_comma_ I was really sad.  That would make me sad too.  Was there any reason she took your friend and not you?
current: She was upset with me so to get back at me she did that.
next: Lol, well thats rude! Hopefully you guys are better now!  Little grudges like that stink, I like to just put them behind me and move on.