Cover your tracks and make him a better husband.

You look at your latest conquest and then, staring into her eyes command her to go to bed, sleep and believe you were but a dream. You then, as a shadow, move down stairs and see her husband, a man a few years older than her in a business suit, standing in the doorway.

You reform in front of him and meet his eyes. "Silence! I have done what you would not and sated your wife's desires. Were you more of a man she would not have needed me. You will forget me once I leave, but you will retain the knowledge that your work has endangered your marriage. If you wish to keep your wife you will need to put her needs before those of your company. Furthermore you will not touch your wife tonight, no matter how much you want to, unless she asks you to, and from now on you will not be able to climax until you are sure she has."

You then slip past him into the night.