Is AUTHOR wrong in the post ? POST : So my brother and his fiance were engaged to be married last August, but less than a week before the wedding it was called off. My brother is pretty private about his relationships, so I don't really know what happened between the two of them. My siblings and I all tried to talk to him in the weeks after the wedding but he just said he didn't want to talk about it. 

The holidays came and went and we found out he was traveling with his ex over winter break, which is cool, we all honestly had no idea that they were still together. I had seen my brother a few times since, but since he had always said he didn't want to talk about it, we didn't bring it up. 

So, just today I see my brothers ex fiance for the first time in over 6 months. It was my mom's birthday and we all went out to dinner and  my brother brought her along. She ended up sitting next to me and I was telling her about this wedding that my wife and I went to yesterday, it was really nice with a beautiful cake and center pieces. I had taken a bunch of photos and was showing them to her, and she seemed interested. I honestly didn't think twice that it might upset her. 


Well, my brother texted the family group chat later that I was being a huge asshole to her, that the gf had to go to the bathroom during dinner to have a cry. He said that they're working on their relationship and there were hurt feelings and feelings of embarrassment on both sides, and it has been difficult being public about the relationship again and now his gf feels  unwelcome by me. My sisters agreed with my brother and say that I should have known better. But...it's been 6 months. It wasn't on my mind? They want me to apologize, do I have to? 