Thats dumb shyt and that is how shyt gets escalated where a spouse gets killed. Your boy ain't right, but his wife ain't right either. If you so sick of a dude cheating on you that you want to hit him....then leave.
Leave take the kids and file the fukking paper work. Cause its a whole grave yard filled with women and men who put their hands on their spouses and that shyt escalated to their spouse putting a bullet in them. Now the kids got a momma or daddy in prison for murder and a momma or daddy in the grave with a tombstone on it.