Porn overloading causes a Coolidge effect, so men will get in to more depraved porn. Now the effect of cumming to another man fucking a woman over and over does give a feedback loop through the rush of dopamine and serotonin associating watching others fucking with your sexual arousal. It can definitely make you more sexually submissive over time ,in turn which can start to induce things like herphilia (the sexual fetish of being seen as a woman).
As far as pair bonding chemicals you can't mess it up on internet girls permanently since half the reason they stay with porn is convenience, mens pair bonding stays rather constant for men throughout their whole life and our personal survival wasn't dependent on the opposite sex. So pumping and dumping is something just about every man is capable of if they already have a partner , without losing any love towards his steady partner and had the added result of women being less promiscuous.
Women's pair bonding being ruined by being whores is partially a survival mechanism that would of been triggered to keep her alive as prisoner of war, or in a harem. When she can freely have a gangbang with the war party of men who just tore out her husbands intestines in a raid.
Any damage done from porn is completely reversible and any embarrassing acts done in the past in the name of cumming is more a psychological problem of regret then a physical one.