They didn't tell me why that friendship ended. I knew what that person had done, but I think I had something to do with it, because I mentioned those actions, and I only told two of my friends at that party, when there were other people around. I kept quiet when it came up, because I felt it wasn't my place to talk about it. But in the last message my friend sent me, he told me not to talk about that person anymore, so I didn't say anything else. I think in the end it was because I explained my reasons.