I don't buy that he is having no contact if he still plans to contact after the holidays. Unless the OW is in a similar situation that she plans to end some other relationship also after the holidays. Just my 2 cents. If he is going to leave you regardless after December, then why allow him the control to tug on your heartstrings like that. Tell him straight up, if you are going to be out anyway, then just go now. If not, and you are willing to commit to OUR FAMILY, then OW must be completely cut from your life forever.