I'm in the same boat with my ex..he doesn't want me "lying" to our son about it. I believe that Santa represents the magic that is Christmas. The lights, the good will, the family time, everything, and I plan to express it to him that way. When my daughter was in home daycare, the lady that watched her, her family was JW. I had no problem with this, I'm pretty open minded about religion (to a certain degree) up until one of her granddaughters told my daughter that Santa wasn't real. She went on to tell her it was all a lie, how could there be a Santa, the guy in the mall isn't him, etc. My daughter was around 4/5 at this time. She was VERY upset, so I told her that of course the guy in the mall wasn't Santa...did she really think that he could be in so many different places at once?? I told her that what happened was Santa was busy at the North Pole, so he has this phone, he calls helpers, and they go out & do the mall thing so he can get the toys done. I was pretty proud of myself I must say as that was completely off the cuff, and to this day my now 15 year old daughter says she was very thankful for my explanation as it made sense to her at the time. I must add she's not damaged at all about the deception. It's the magic of Christmas I plan to share with my son.