You put all this time, effort and resources into showing your wife/gf how much you love and adore them. In return you she sleeps with and spreads her legs only for other men, never for you. You take great care of her and provide for her hoping to get some love and affection in return. He comes to visit whenever he wants to (or she calls him) and she drops everything and anything she doing and they make out on the couch and fuck in your bed. All you get is to lick his cum off her body and out of her pussy. What makes you do that? Do you like the denial and humiliation? Do you like being and her thinking you as a lesser man? Are you hard wired to be a caregiver and not a real man that takes what he wants?