It's a disease. The story is even Bill Wilson, a founder of Alcoholics Anonymous, couldn't overcome the sex monkey on his back, and spent his sober life cheating on his wife and filled with guilt. The story is that sex addicts become dependent on a body chemistry created by constant sex. Orgasms flood the body with endorphins that kill pain and tranquilize you. Sex addicts are really addicted to the endorphins, not the sex.
Sex addicts have lower natural levels of monoamine oxidase.
Sex addicts really crave the peptide phenylethylamine that might be triggered by danger, by infatuation, by risk and fear. For a sex addict, your tits, your dick, your clit or tongue or asshole is a shot of heroin, always there, always ready to use. Nico and I love each other as much as any junkie loves his fix. Nico bears down hard, bucking my dog against the front wall of her insides, using two wet fingers on herself. That would be so hot.