I don’t know if anyone talked about the reciprocity of children idea. I skimmed through, but I didn’t see it. What I mean is this idea that his son won’t go, then her children also shouldn’t go, either. It will become a no children event. In this way, it will kind of even out for his son’s choice and protest, and make it seem like the children weren’t wanted there, anyway.
I’m guessing that the son doesn’t want to go because he is still upset about the loss of his mother, and he is probably really angry with his father for making a new relationship. If this relationship started prior to the ending of the marriage, and the son knows it or suspects it, then that makes it even more difficult for the son, because he feels like this woman broke up his parents and his happy home. He has no desire at all to live with a new mother, and certainly not with new step-siblings.
So he is trying to prevent the union. Symbolically, at least, if he can stop the marriage, then he won’t have to live with these new people.
Now I’m not sure what others are suggesting. Do they think the marriage should not take place? Should the households not merge? Should they move in together, but not get married?
I do believe the kids come first, but I also believe the parents’ happiness is important. Sometimes you have to do things that kids don’t like, and they have to live with it. On the other hand, they can make life miserable. The son might start acting out. He might drink or do drugs or get into trouble, if he isn’t doing that already. Many children do act out when their parents divorce.
I don’t like the idea of making the new wife’s kids stay away from the marriage because his son can’t handle it. I think he is going to be trouble, no matter what. It won’t help if the other kids don’t go to the wedding. His problem is his new mother and new siblings, and he is going to be acting out against them, whether there is a marriage or not, and whether he is there or not. No way he should go. In fact, he should be told he can’t go. Reverse psychology.
Like other people say, they need family therapy to help them talk about it. The son needs to express his anger and everyone else needs to listen and support him. Fat chance of that, but at least in therapy it could be possible.
But this is going to be an ongoing problem, no matter who attends the wedding. Having the other kids not attend will not help the son. So they might as well go if they want to. But dealing with the son is going to be an ongoing issue, and I hope they are thinking about that and have a plan for that.