The bible clearly says what it thinks about adultery. That if a man looks upon a woman lustfully, he HAS already committed adultery with her in his heart. And what purpose would shooting hubby and beating the crap out of the girl serve, except getting you life for murder and assault?
I wouldn't be happy if my man looked at porn, but I'd make it very clear: it is me OR the porn, you ain't having both and if you choose the porn, your butt is history..