Sounds like manipulation of the kids to me. By having you tell them about the S, it's entirely possible, they hear that this is your idea and YOU want out and not that DADDY is being irrational and a big child. Unfortunately, at that age, it is common that the one they would feel have broken up their "happy family" is you and not H. You should tell the kids together.
Me 43 W 43 S 10 (Special Needs) M: 14 yrs T: 18 yrs Bomb: 09/16/12 Filed for D: WHO KNOWS???
You should tell the kids together. 