Who's in the wrong?

I thought this one was interesting.

I was watching a bunch of Reddit videos on YouTube and came across one of these that centered around weddings.

Basically, man wants his "best man" to be his closest female friend, but the bride to be doesn't like it.

Reading through the comments on the video, I saw a lot of people saying that the woman was being severely insecure and sexist, but I personally don't think either of them are really wrong.

Lots of comments also said that "it's not the bride's day, it's a day for both of them" but still expect the bride to not disagree with something she's not comfortable with? I just don't really get it.

I wanted to know what you guys think. These kinds of Reddit videos help me through quarantine tbh lol