It's Bushs fault
This is a really dumb shit. I bet the kids knew this was coming 6 months before he did.
Unfortunately for him and society I bet the kids have 6-7 friends that live in a single parent family. Dad raising the kids or Mom doing so.
Few kids reach majority without a step parent. Perhaps the kids are happier with this situation, no more being awaken by parents breaking things and yelling at each other. No more seeing Mom with black eyes. No more seeing their Dad emasculated by their Mother.
Nothing one can tell a child about a break up of the family, they know and may welcome it.
Get the parents apart and perhaps the kids can continue to be kids, spend time with both parents and enjoy that time.