there's more
What you have to understand is that we all are still carrying around the same biology as our ancestors did in the stone age. Our primary reason for existing in this world (biologically) is to procreate offspring in order to continue our unbroken line of genes. The very fact that you are here is because your ancestors have had kids and grandkids for countless generations.
Now, how is it that females and males select who we will procreate with? Men and women have different methods and different priorities for this. Males select females with long legs, shapely hips, large breasts, and pretty faces. In other words, guys want to fuck total foxes. Guys look for these traits because they give signals that the woman is healthy and will have healthy kids. The programming in men says to go out and impregnate as many foxes as you can, thereby having as many kids as you can. Men are after quantity, not necessarily quality, because they have the ability to really spread that seed around, thus increasing their chances of having more kids.
Women look for quality, not quantity. We are programmed to look for tall, muscular men, with strong, broad shoulders and strong arms. These are signals to us that these men are strong enough to protect us, strong enough to make good hunters and providers for our children, and if they have large cocks, they will bring us much pleasure. These guys we shall call studs. These studs produce healthy, good looking children. That's why us women would rather fuck Antonio Bandaras than Danny De Vito. When a stud makes contact with a fox, the sex is very, very good indeed! Super sex! Mind blowing sex! Great orgasms!
The advantage of selection is with the woman. If she is a fox, she usually has several studs chasing after her. She usually selects the best one for her, but sometimes another comes around who makes a better match; a super stud. She will always be tempted to change up to a better partner if the opportunity presents itself. Women can be fickle creatures.
When men and women make love, they exchange more chemical pheromones that are passed during kissing, and from the man's semen into the woman's vagina. These chemicals cause the couple to become "attached" to each other. A superior male, however, can break this bond.
When you separate a man and a woman for a time, the man will build up both desire for her, and also some doubt of her fidelity. When a man fucks his wife for the first time after after an absence, his ejaculate will almost double in quantity, just on the outside chance that she has been unfaithful, and she has another man's semen swimming inside of her. That reaction is called the "sperm competition reaction", and those orgasms experienced by men who have reunited with their mates are very powerful indeed! Absence makes the heart grow fonder, and it also makes the cock
harder, and the balls more productive.
Unfaithful to him? If he knows this, the sperm competition reaction in him will kick-in, producing more and more sperm the very next time
he is around you, regardless of whether or not you make love. When he sees you fuck a superior male, his sperm competition reaction causes him to want to cum, and cum hard! Even though the humiliation and jealousy of what is happening also takes place in his mind, the sperm competition reaction can overcome his feelings of anger and jealousy and can cause much pleasure by making
him cum very hard with a lot of semen! This is the component that causes him to "like it" when you cheat in front of him! His body is so compelled to compete with your lover, that he can
sometimes cum just watching you and your stud! It's a trick of nature my friends! It's not even a perversion!
Now, more about your reaction. Even though have has a mate and you love him very much, you are still vulnerable to the attraction of a super stud. If a superior male comes along who gives off pheromones telling you he is a superior match for you, you will be attracted to him, and your desire to have sex with him will build. If you continue to make social contact with one another, eventually you will try to attract him into fucking you. It's your nature. If the attraction is mutual, the stud will take in the pheromones she is giving off, and the two of you will get hot for each other. You
will find a way to have sex.
Of course all of this is chemical/biological, and has no effect on intellect. Just because you have a physical lover does not neccessarily mean you will leave your husband or stop liking/loving him.
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