Sexual Relationships 
Sexual Health 
Not all players and promiscuous women are sluts but Male Slut Shamers are themselves Sluts.
It all has to do with control. Self control and situational control during sexual negotiations aka flirtation as well as the "post game cleanup". Generally with sex, whoever wants it less has control. This sets up a game of chicken, where both of parties are attempting to "give less fucks" yet not seem so disinterested as to back the opponent into a corner where their only move is to actually disengage from the game. Note, I say opponant and not enemy. We're playing a game of skill here not fighting a war.
Essentially both people are trying to say "Well I'm down if you are, but I could go either way". If you're both doing this, you're actually both players and generally this is what we're all trying for, to be evenly matched in skill with our partener. Just as its more fun to play chess with someone on your level, no one wants to be utterly destroyed in 3 moves or destroy their opponant as quickly during a friendly game of Let's Make A Deal (X Rated Edition). We didn't used to acknowledge the female player much but she's out there and she always has been.
Now generally women have control in this game simply because they want it less. This is because:
1) Women physically have more risk associated with sex (from risk of pregnancy to danger from a stronger sexual partener to the physical possibility of not cumming) and so it's not nearly as likely to be an entirely positive experience as it is for men.
2) Though women's sex drives can reach the exact same highs as those of men, it's a finer tuned instrument. It takes a far more specific input to activate it and so it's much less likely to go off by accident.
Being slut shamed is something reserved only to women, BECAUSE they are able to do something which men aren't. If they are terrible players, they can still have tons of sex. They can actually want sex MORE and get more. When men are overly eager, they're generally turned away. Not so with women.
In any case the truth is that a man calling a woman he has slept with a slut is actually a projection of his feelings for himself as well as her placed entirely onto her post coitus. It takes two to tango as they say and this is as close as many men visibly get to post coital regret. In truth he feels cheap for having sleapt with a woman who provided no challenge, perhaps for working for a long time to sleep with a woman who's personality he despised even, thus meaning that he rewarded and incompetant player with sex.
Any confident person would view having sex with them as a privilege. The accusation then is leveled premptively and defensively toward the woman because the truth is that he knows that he did and might generally find it hard not to have sex with any woman that makes it significantly easy for him. He both wants that known and doesn't want it known though. He wants women to not be intimidated of sleeping with him by letting them know he is a man who is basically a guarenteed lay and yet he doesn't want the negative implications which that makes about his self worth or sense of self worth wide known. He wants to have sex with all sexually attractive women but he doesn't want to be in a situation where any of these hot women view him as disposable an approach him with little effort or respect. He also wants to view himself as an elite man who was judged as worthy to compete sexually with woman he judges as worthy to compete sexually, not one of the masses of "boytoys" used as play things. So the move here is to let it be known that yes, he will have sex with any beautiful easy woman and yet remove the negative implications by putting them all on the woman. "He just sleeps with sluts, he is not the slut." As he spins it, he is a competant player and beautiful women seem to throw themselves into his lap, but they shouldn't get the idea that they are indeed using him. By slut shaming, he gets the benefit of the occasional easy lay between real conqests and yet shames most women into being competent players ie: engaging in the game of chicken/flirtation/hard to get/the chase.
Men are already shamed into being competent players through rejection and must learn to build a personal, phisical and social presence more tailored to a woman's attraction cues in order to qualify as a worthy player. The laws of nature dictate this, in most animals the male is heavily ornamented to attract the female or the female generally has sexual power, not the other way around. The natural counter, and this is simply an anecdotal point and not an sort of codoning, is forceful reproduction by the pysicalmy stronger sex.
Civilization attempts to do away with murder and rape. Following this men had modeled society to balance this new natural power imbalance in favor of women with a corresponding societal power imbalance, requiring that women had certain skills, physical features, sensabilities and such. As we as a society began to loosen those requirements and women were free to define themselves more broadly, slut shaming grew proportionally as a method of social control. It is an amplified version of traditional views of of chastity. Since men find it harder to reject sex of any kind, which womem have far less of a problem doing, and out right requiring too many things if women is no longer in fashion, we slut shame more.
This said, the men who slut shame are themselves Sluts or in the case of those who have not sleapt with the women in question, impotent sluts who would atually have sleapt with said woman gladly given the chance. Alternately these impotent men may just be trying to adopt the strategy of slut shaming used by actual players who occasionally have sex with and slut shame "easy" girls (and who are thus occasional sluts themselves). The hope of these impotents is to blend with these men and camouflage with them for a multitude of reasons that all boil down to "fake it till you make it".
People don't realize it but Male Slut Shaming is becoming fashionable now. A male slut is a Dog or more reently a Fuckboi (when said by women), a guy who has sex with "anything with a hole and a heartbeat". Generally being labeled as such is the exact same function as slut shaming and is the failure of the man to displace his "slutty" behaviors fully on women. If he gets this label among the high value women he attempts to sleep with, the non slutty women which are his main target may cease dealing with him leaving him only to sleep with the "sluts" thus creating a situation where sluts and fuckbois mainly have high frequency casual sex with eachother.
Withing such a closed system will be easy sex, animosity, disease, frustration and incredibly physically and superficially socially attractive parteners. Longterm pairing will be unsuccessful at best and codependent at worst.
This is not in favor of either gender. As far as I could, I kept it neutral. I probably didn't manage it because I'm human. Please excuse the leanings. It's as balanced as I can see it and make it.
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