To ask H2B to include my DS

[Fedupb2b14]

H2B is having his DS as groomsman & hasn't considered asking my DS. Doesn't want my DS dressed the same as he's not part of the bridal party. Both children are similar age. Feels like my DS is being excluded AIBU?

As others have said this is grossly unfair to your son. It doesn't matter if your son has a particular job title at the wedding. What matters is that he should be dressed the same as the rest of the party. The fact that your DF is making a big point about him not being dressed the same is the main problem here. He is trying to exclude him and it is so wrong. I wouldn't go through with this wedding either.