My (34m) brother (28M) wants me to be his best man even though he considers me a bad person.

It’s a long story but I’m the same person that’s been posted on r/confession so it’s still me just a different post.<br><br>I went to jail when I was 18 for arson and grand theft and got out when I was 22. The reason I did this was because my brother had been using my things without my permission and I got fed up, so I burned his car and house, but he was in it and almost died. It was 100% my fault and I never meant for things to go that far. I haven’t told anyone that it was me except the police because I didn’t want my family or his friends to think badly of me. <br><br>Since I’ve gotten out I’ve been working on getting my life together and I have for the most part. Things with my brother have been strained but he knows why even if he doesn’t know it was specifically me. <br><br>His fiancée is a different story. I met her a few months ago and everything was fine she seemed nice. Well she found out I’m an ex convict and she thinks there’s more to my past. She’s been prying into my past and asking me rude questions and I can tell that she either told him or he figured it out on his own that I’m a burner. <br><br>She’s not wrong that I’m a bad person but there’s just something about her that rubs me the wrong way. He wants me to be his best man and I’ve agreed, but she hasn’t been to any of the wedding planning sessions because she wants me gone. I might have said something under my breath but I can’t help that I don’t like her. I don’t know what to do. I’ve stayed out of the way for the most part but she thinks I’m a bad influence on him because I’m an “ex con burner”. He got super drunk a few nights ago and told me he knew what I did. I confessed and he says he forgives me. He wants me to be his best man because I’m his brother. She thinks I’m a bad influence and doesn’t want me around him. Honestly so far I’ve kept the promise I made to stay out of his life and I think that’s making things worse. She thinks I’m lurking or something. I don’t know what to do. I want my brother to be happy but his fiancée thinks I’m a bad person and I don’t know how to fix that. <br><br>I’ll mention that she doesn’t know how bad the burning was, just that it was a house and a car. He knows I was the one that did it but not to the extent that it went.<br><br>Edit: I don’t have any photos of myself, my brother, or his fiancée. I’m sorry.<br><br>Edit 2: I know I’ve been rude to some people in the comments. I’m sorry guys, I still using it but please be more understanding and try talking to me instead of being combative. <br><br>Edit 3: I’ve cleaned up my comment. I was very defensive and lashed out at people. I do recognize most of you were trying to help me.