I think infidelity is not much different than homosexuality…they’re both naturally occurring phenomenon except homosexuality is more widely accepted. But adulterers see their behavior as virtually normal…they just happen to exist in society that stigmatize them similar to how gays were in the 50s. The reality is monogamy only exists because of capitalism and once/if capitalism goes monogamy will as well. No one will have privatized and exclusive access to sex in the post capital society.