Ancaire, this just shows the quality person that you are. I am sure that you H will be on his best behavior in front of the kids, but in the event he starts to push your bottons, you need to ask him to leave immediately. If he refuses, then you need to remove yourself from the situation. I doubt that will happen, but best to be prepared.
Me: 42 H: 40 M: 12 H moved out - 8/2015 I filed - 8/2015