Well, this is the way the daily Mail reported it. here
"It would cover men who shout at their wives and women who hurl abuse at their husbands - although it was not clear last night if nagging would be viewed as breaking the law."
Comments are Genius, including the one from my DH "This would mean my wife would get locked up once every month..... who would do the cooking then?"
PMSL! He's a joker.