First there is the God-given appreciation and enjoyment of another person's beauty and personality. Secondly there is the pull of temptation when we consider the possibilities and consequences of adulterating our marriage. Thirdly there is the heart decision to go and be adulterous if we can. There are married men who peek occasionally at a girlie magazine, and some married men buy them. But there are very few women who reciprocate this visual interest.
Mothers tend to get very upset when they find such magazines under their son's mattress.
And there are innumerable women who feel that their marriage is somehow adulterated if their husband is fascinated by other women's breasts. The term pornographic derives from the Greek word porne meaning a prostitute, or porneia which we define as sexual encounters without love or commitment. The assumption used to be that the depiction of nudity or sexual intercourse was pornographic because only prostitutes would flaunt their bodies to be seen by strangers. And since prostitution was illegal pornography was also made a criminal offence. That definition of pornography has more and more been abandoned in our law courts.