Like you, my ILYB was last year, but we still spent (an awkward) Christmas together, last year. This too, is my first Christmas without her. And to add, without my children on the eve and the day.
While I miss my kids and want to be with them, I am doing surprisingly well, and it is not in an "as if" way...
So today I count my blessings and know I will see my kids tomorrow and for a few days and today I can simply enjoy for the awesome day it can be... that I will create...