It's all about human's ego/jealousy/ exclusivity.
Would you share your spouse with another? Knowing that he/she
may enjoy it more with the other party than you? Can you accept
that others are enjoying your spouse? Some guys/gals can't even
stand their spouse stealing glances at passerbys. There was a
incident of woman slapping a stewardess for talking to her
husband.
We are possessive by nature. Something we hold dear, we do not
share. So when you truely love someone, how can you share intimate
moments?
Even if you are willing to share your spouse with others (you
sick bastard), your spouse might not be willing. Well, there are
some couples who can take this sort of crap.
Their philosophy is to let their spouse enjoy, including
sleeping with others. Not only can they allow that, they enjoy
watching it take place.
How sick is that? For me, it's gross.
What's your take?
Can intimate moments
