Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: My best friend, FRIEND, I‘ve known since I was in diapers. We were neighbors throughout HS, went to college together, and shared an apartment our last year there. He’s been a brother our whole lives; we’re both an only child. We’ve talked about how we’ll be each other’s best man for as long as I can remember. I don’t really have any friends other than him; I’m not very social.

2 years ago I met the love of my life, FIANCÉ. 1 year into the relationship, FRIEND meets FIANCÉ’S best friend, MOH (Maid of Honor). FRIEND and MOH start dating. FIANCÉ and I both agreed that this might cause complications in our relationship if they have problems, but also acknowledged that we couldn’t really do anything about it. What were we gonna do, tell them they can’t date? They were great together, and MOH found him worth giving up “waiting until marriage.” A few months ago, I proposed, and we are set to be married in a little over a month. I asked FRIEND to be my best man. FIANCÉ asked MOH to be Maid of Honor.

2 weeks ago, FRIEND went out with some other friends, and ended up drunk and going home with a girl. He confessed this to me the next day, and he felt like absolute shit. I told him he’s gotta confess it to MOH. He fucked up and it’s only fair to her, and she’ll be a lot more understanding if he tells her himself. He agrees this is the right thing to do.

MOH‘s livid (rightfully so). I come home from work and she‘s at my apartment. She packed a bag and asked FIANCÉ if she could stay with us to get out of her apartment. I’m fine with this; I can understand she’s going through a rough time. 1 week ago, MOH decided she can’t handle dating anymore, and they break up. She‘s staying with us until she can find another apartment.

FIANCÉ tells me that there’s no way MOH will be able to handle being at the wedding, especially walking down the aisle with FRIEND. I told her that they don’t need to walk down together, or do anything together, but I can’t tell him he can’t be my best man. It would devastate both of us, as well as leaving me without a best man. FIANCÉ tells me I shouldn’t even want to be friends with him anymore, and offers her brother as my best man. She put her foot down on him even being AT the wedding. She says that one of them can’t be there, and that it’s not fair for MOH to both get cheated on, and then ALSO not able to go to the wedding because we “chose” FRIEND over her.

FRIEND is already devastated that he fucked up his relationship. I hate cheaters, but you don’t just turn on your lifelong best friend because he fucked up. I understand that it is very challenging for MOH, but I also feel like since this is MY wedding, it should be determined by what me and FIANCÉ want, and that I shouldn’t go through my wedding without a best man because of MOH. I also don’t think that it should be a choice of one or the other, and that they should both come and be professional and avoid each other.

AITA for standing by having him as my best man?

wanting my best friend as my Best Man, even though he cheated on the Maid of Honor