Well, who's GF/BF allows the partner to have a fling/ONS.. If i
don't know means don't have. Who will go around telling his/her
partner this," hey dear, tonight i will be checking in hotel 81
with this fellow, when i come back then i tell u the process of our
love making session..." 
Like what others in this room have said, it's the excitment of
doing and not getting caught..But at the end of the day, I will
still go home. 