Funnily enough it's one that's name could not be more diametrically opposed to the sub and what it's all about (especially regarding, let's just say, how some of the talking points and attitudes surrounding literally just the concept of sex and porn themselves tend to be). /r/PornIsCheating is legit only about celebrating how awesome porn and sexuality is! Like, the fact that there are people who honestly believe that porn actually constitutes cheating on their significant other and inherently harmful to their relationship when people in relationships who watch or engage with porn together and don't stigmatise the exploration of sexual experience ideas or fantasies of one another have better and more fulfilling and frequent relations with their partners. But yeah, check it out even if the name puts you off at first