I can't tell what state this is. . .I know when I lived in Florida, they passed a law that if some one if 'feels' threatened in any way on their own property, they have the right to kill the assailant.
There was a lot of thought going both ways on how this could be used in a court of law to take liberties in a very unwise direction.
But I don't know if this is Florida, or not.
I'm not sure that adultery should or could count as a threat to life and home.