Jules..I can't imagine that. My mom had breast cancer about 5 years ago. I was afraid my dad was going to have a heart attack running back and forth with my mom.
What your H did is the lowest of the low. I thinbk there is a special spot in H*ll for someone that does what he did.
The best advice I can offer you is take one day at time. Be polite to the jerk and start to rebuild your life around your kids. I am doing just that. I am focused om my girls and right I barely think about my W. I will at some point in time but right now I am focused on them.
Keep posting her.