“I opened the door and saw from far the. house boy on top of my wife, both nude”! What should I do?

Is it normal that a maid becomes the illicit 2nd “wife” or the male servant has secret sexual deeds as a “2nd hubby”, in this part of the world, yet both live on pretext of assumed innocence! Would you be unfaithful to your spouse? honest ans 10 points now!!