I really dont know what to do?

A very difficult decision who wants to be alone on Christmas day in pain, Christmas is about caring and sharing his family should make allowances, all come up and see you, give you presents and make you feel welcome, but he should also go off and have a meal and bring you in your plate and cracker and spend time with you later on, so a bit off both I feel, he is going to be running around like a maniac but that what you do for love of you and his family.