In my paper I start off discussing on why the slut double standard exist and this is what I came up with so far.
Men
In nearly all societies through time, men have been the ones who are expected to approach and intitate contact,(also note that this is true in nearly all mammals, and most other animals too.) They must compete with one another, risk embarrassment and rejection, and the expenditure of resources (both tangible and social) in hopes of finding a mate. It is their biological role to seek out females, and win their favor for a shot at reproduction. If the man has poor skills or appears to be weak/sickly his chances to mate are greatly diminished. If a man i able to sleep with many women it is a strong indication that he possesses skills and traits that make him a highly desirable and valued individual. A man who is able to sleep with many women is essentially the pinnacle of what men are disgusted to do. Other men recognize this and will applaud that man's achievement even if they feel a bit jealous. Women, too, recognize this and may find themselves attracted to such a man, because if many other women want him he must be doing something right.
Women Women operate on qualifying paradigm. Because reproduction for women is time consuming, potentially fatal, and of a limited capacity. It is a woman's biological perogative to be very choosy with whom she is sexual with. Sh e must be sure to secure the best mate she can, or risk the possibility that her children are weak or disadvantaged. When a woman sleeps with many men its a strong indication that her ability to judge quality in mates is non-existent and she does not care about the possible consequences of her actions. More importantly, men who are aware of her habits will be unable to trust her. At a deep instinctual level men cannot stand the idea of having a child with a woman who sleeps around because the paternity of the child would be in question. Loose women are looked down upon with scorn because they cannot be trusted