I'm still with Disabrie
In regards to your kids this set up is still very 'you and them'
If I was your ex op I would be pretty angry you have carried on like this behind there backs, its very underhanded as well to secure tour finances to this new family so when you do force your kids into it, you have their money to help you win them from your ex, who I'm guessing doesn't have the financial support of a partner and his wedded spouse.
I'm sorry but I just think you assume people are attaching you on this thread because of your relationship set up and the fact you are having sex with a married man.
But people have expressed concern for your children, people who have lived in these set ups, myself included, and you don't acknowledge them.
Have you given any thought on how this will effect them in the future? And this is not the same as having a step dad. I had a step dad who was brilliant, lived with us full time and didn't have some other family on the side!
"oh we don't see my step dad very often because he's busy with his other wife but he stays over on weekends"
I was old enough to roll my eyes at my dads situation when my friends asked, we used to joke about it, I was in no means happy with what he was doing. But his older kids, my brothers and sister, are not old enough, they just have to live with it.