We are convinced his fiancé is behind alienating us. We accept his choice and will not say anything more about it or any future choices. We can surely expect more poo flung. We will attend if they want us but our faces will look like we are at a funeral. Maybe no one will notice.
As for my wedding, funny you should mention, it was traumatic. Also not by my fault. At the time though, I got through it with only crying right before walking down the aisle.