Backstabber
We never thought we needed to say it, but getting stabbed is never a good thing and something we would recommend you all go and try. Could you imagine a piece of sharp metal going into your back an inch deep? That would hurt quite a lot if you ask us.
But judging by the story, we think that it was just an honest mistake. Because there were no bad intentions behind this person’s actions, we feel that this friendship can be saved. Funny how actually stabbing someone isn’t the worst thing you could do in a relationship. Assuming it wasn’t a serious injury of course.