there's a chemical in girls' brains
which is released only 3 times in her lifetime;when she has s.e.x, gives birth, and when she breast feeds her child. it's called oxytocin. this chemical emotionally connects her to the other person for the rest of her life. men only release the chemical when they bond with their children. even if you are lucky enough to stay friends with a girl after having s.e.x, a girl will always have feelings for you, because of the chemical. so if you think s.e.x is a game, remember that you can mentally mess up a girl for the rest of her life. it explains why humans were created to have s.e.x with one person. doing it with multiple people has a strong negative effect on the relationship you plan to have with the person you choose to spend the rest of your life with. keep that in mind next time you decided to "hit it and quit it".