Non-wedding related, but you ladies seem to give good advice.
This weekend my best friend and her family invited me on vacation with them. We went out drinking the first night and my best friend's sister got very drunk and ended up slapping me in the face because she said I was teasing her too much. I ended up hitting her back, which I immediately regretted, but it was more of an instinct than anything else. I apologized the next day but never received an apology in return.
My best friend's sister doesn't seem to think she did anything wrong. I basically want nothing to do with her anymore, but I know that is going to cause serious tension between me and my BF. My question is, what should I do now, if anything?