I need to call my friend out for showing up to a couples trip that me and my husband had planned.
Do you know the reason why he may have done something like this?
I have no idea.
it is weird to show up to a couples event solo. You should talk to him and explain why it was wrong to do what he did.
I shouldn't have to talk to him about this. He should know what he is doing is wrong.
It may be fair to ask him to not hang around you and your husband while your friend is there. It should make sense that you want to spend the couple trip with your husband and not your friend. Hopefully your friend understands where you are coming from.