Porn-free relationships are stronger, with a lower rate of infidelity. That’s what Amanda Maddox and her colleagues found in a study of men and women, ages 18 to 34, who were in romantic relationships. The researchers measured the levels of negative communication, relationship adjustment, dedication or interpersonal commitment, sexual satisfaction, and infidelity. In their study, 76.8 percent of men and 34.6 percent of women looked at sexually explicit material alone; 44.8 percent reported viewing it with partners. They found that people who didn’t view any porn had lower levels of negative communication, were more committed to the relationship, and had higher sexual satisfaction and relationship adjustment. Their rate of infidelity was at least half of those who had watched sexual material alone and with their partners. But people who only watched porn with their partners were more dedicated to the relationship and more sexually satisfied than those who watched alone.
Maddox, Amanda, Galena K, Rhoades, and Howard J.Markman,” Viewing Sexually-Explicit Materials Alone and Together: Associations with Relationship Quality,” Archives of Sexual Behavior (April 2011), 40, no. 2, 441-448.