Disclaimer: I am posting on behalf of my sister, so she can remain anonymous. However, she will be looking at comments as she is interested in hearing reddit's perspective on the following situation that happened to her.

For context, I (30F) have been best friends with "Sarah" (38F) for 10 years. We’ve always been incredibly close, and I considered her family. I’ve supported her through a lot, and I thought our bond was really strong.

When I got engaged, I asked Sarah to be my maid of honor. I checked in with her beforehand to make sure she had the time and energy to fully commit to the role, and she assured me that she did. I was really looking forward to having her by my side, but as the wedding approached, things started to change.

She became less involved in her responsibilities. She didn’t help plan the bachelorette party, so my matron of honor ended up organizing the whole trip. When it came time to book flights, Sarah kept delaying and making excuses, despite repeatedly assuring me she’d be coming—and that her mom (whom I adore) would join us too. Then, just a month before we were set to depart, she told me she was struggling to find affordable plane tickets. In the end, she didn’t come at all, and I ended up going with a couple of family members instead.

Given everything that had happened, I made the decision to change how the bridesmaids would be lined up during the ceremony. Originally, Sarah was supposed to stand beside me as my maid of honor, but it didn’t feel right having someone who hadn’t truly acted like a maid of honor standing next to me on such an important day. I decided to place her at the end. I know it was a tough choice, but it felt like the right thing to do in that moment.

On my wedding day, Sarah showed up early to help me get ready, but after dinner, she and a whole table of mutual work friends left early to go to a restaurant/bar (like a Chili’s-type place). She didn’t stay for the dancing or the rest of the celebration. I found out from a social media post later that night, where the caption read, “Let’s get the party started.” I was heartbroken and felt abandoned by someone I considered my closest friend.

In light of everything that had happened, I also instructed the photographer to edit Sarah out of all my wedding photos. Now that the pictures are up, several people have asked me why she’s not in any of them, and I just haven’t really wanted to talk about it with others.

After seeing the photos, Sarah sent me a $421 money request with the memo "hair, makeup, and not my wedding expenses." I was completely stunned. I never required any of my bridesmaids to get their hair and makeup done by the stylist, and given how things went, I felt it was completely inappropriate.

Since then, I’ve distanced myself from her. We haven’t spoken about the wedding, and she hasn’t reached out to check on me or explain her actions. The only communication we’ve had is work-related, since we’re coworkers. I felt unsupported and betrayed, and I just couldn’t move past it. I’ve only discussed what happened with a few close friends, which is why I’m turning to Reddit for an unbiased perspective.

So, Reddit, AITAH for feeling betrayed and breaking up with my best friend of 10 years because of her behavior surrounding my wedding?