Actually, you might have missed a step here.

No matter who the children originally belonged to, they are now in a household that is parented by two adults - natural mother & father - or not.

For the children’s sake, the two adults must act like adults and communicate with one another about the children. It is of utmost importance that the adults be in agreement in front of the children. The kids are smart, and if they see a point of disagreement, they will exploit it to the max.

At times, one adult (or the other) may well have to bite their lip and say nothing - even when they do not agree with the other’s stance. This will present an image of unity to the child, and he/she will, most likely, accept the decision.

So, parents - get the communication amongst yourselves started!

You have to give respect, to earn it.