Were you going to state that you and stbx are going to get divorced and wait and see if they have any questions? If DS asks why, are you going to state that the marriage vows were broken and in order to heal from the broken vows, both parties would need to be committed to reconciliation and unfortunately, that is not the case? Be honest in your answers. The kids don't need to distrust you too.
My children were younger than yours on their dday (DS was 13, DD had just turned 17). After doing a ton of reading on SI, I was able to tell them "the facts" and not blame. I guess I was lucky in a sense because stbx was too much of a coward to even say goodbye to them and just took off so I had the "privilege" of telling them myself.
How did you sleep? How many more hours until DS arrives home?
I would be fine with leaving out the "caring" part, because frankly, I couldn't give a S**t about him at this point,
I do trust WS enough to believe that he won't say anything at that point. He does keep talking about how we're a "team" in all of this.
Take care of yourself, Lackingcourage. How are you taking care of YOU? What have you done to protect yourself in D? Try to get some sleep. You will need it. (((((LC)))))
Do you want me to tell you something really subversive? Love is everything it's cracked up to be. That's why people are so cynical about it.