text: Before doing it at your wedding, he really should have come up to you both for permission. That way you could have figured out how you could make the announcement in a way that would still make it your day, but rejoice in love and committment in the room. You could have arranged them to do the asking in private and announce it at the end of the reception in a very nice way. He was out of line, but on the other hand your wedding is now special since you were a part of the history of another marriage. He did a thoughtless thing, but didn't he mean well? Did he really do it to steal your limelight, or was he just clueless and meant well?\n\nIf you really want to make announcement at his wedding, why not ask if there would be a way to do so without detracting from their big day. If you just want to do it out of spite, I would argue against it, especially if they didn't propose to spite you. It is never a good thing to do the wrong thing, even if you think you were wronged. \nThe fantasy of revenge rare holds up in reality. \n\nYou can choose to hold a grudge, or let it go and just be happy that they felt comfortable enough to share their joy on your day (ie. spin it to something positive). Life is too damn short.