I am sorry you are hurt by your husbands actions, I think I would be mad too if my husband did this, he went behind your back and asked another woman to do what was your right to do, so I am not surprised you are very hurt, as husband and wife, and the deep love we have for one and other, we expect to be the first one to be told of anything the other is doing or involved in.
If it were me I would get it of my chest by asking him why he asked his friends wife to do the dish. It may cause a row, but at least you will feel better when you have have an answer for his actions. Don't let this spoil you Christmas by letting it fester.
Forgivness is in all our hearts, you will feel much better when you get it sorted.
God Bless, Happy Christmas !!