So this story is five years old but Lovebird's post reminded me of it and you will all love this one.
XH had friends that were getting married. We knew we were going to be invited as a couple. However wee separated and I filed for divorce before the invites went out. The bride, not knowing what to do with this situation, sent a separate invitation to me to be polite. I marked the RSVP no, because they were XH's friends long before he knew me, and mailed it back but sent her a personal email telling her thank you but that I thought it was probably better if I not attend because the focus needed to be on their day and I was afraid things would be too tense between XH and I. I wished her sincere congratulations and good wishes.
She then emailed me back and said (I'm paraphrasing, but only a little bit) I'm so relived to hear that. I only sent that to you because I felt obligated to still invite you. Thank you for not coming. She then went on to inform me where they were registered and told me that they were asking people to only buy from the registry or else give cash value equivalents. Of course everything on the registry was $200 or up.
*sigh*