Flattening and disappearance of sexual life
In a relationship the two most dangerous things are: the disappearance and the flattening of sex. Based on the above example, the husband’s perverted sexual fantasies probably won’t ruin the relationship, but there will be a great chance that sex becomes flat, leading to its total disappearance after a while. Cold or flat or average sex life does not ruin most relationships, however, there can be side effects. For example, a husband is more likely to jerk off watching bandage or dominatrix porn than to touch his wife. Then sex is slowly disappearing from the relationship, and when watching porn has become boring, the husband will start fancying other women on the street or in shops, eventually leading to the first paid sex-affairs with prostitutes and escorts, who will satisfy his kinky desires. Besides, due the lack of sex and sex-affairs, the marriage will be at risk.