I was asked to be a bridesmaid in late December 2008, despite the bride to be not knowing the actual date of the wedding, other than that it would be sometime in the summer of 2010, preferably in June. I told her that I should be available to attend, provided that the date in question was not on my birthday (which happens to be in June), as I am a multiple birth and our birthday is important to my family. She replied that my birthday was the date she really wanted, and I reiterated that if she chose to have her wedding on my birthday, I might not be able to attend.
She later sent me a message saying that the church she wanted to be married in had every day in June 2010 open, so she scheduled it on my birthday like she wanted. Now, I understand that there are a number of factors that go into picking the wedding date, the least of which is whether or not a member of the bridal party can attend, but it felt a slap in the face. This bride to be has also said/done a number of things that have made me feel as though we were never really friends (I can give more information, but there's a pretty long list at this point, and don't want my first post to be more whiney than necessary), so I let her know that I wouldn't be able to attend her wedding (which shouldn't be that much of a surprise, as she picked the only day that month that I had a conflict with) and stepped down as a bridesmaid.
She's freaked out, e-mailing, texting, and posting on both my blog and Facebook either asking me to re-join her bridal party (I'm sorry, that won't be possible), or telling me what a horrible friend and person I am and saying that she hopes my wedding (I got engaged after she did, and when I told her the good news, she said that I couldn't be her Maid of Honor anymore) will be as awful and terrible as I am.