My Boss Cums Over When My Husband's Away

My boss and I have been fooling around at work for awhile now. But today we have a rare opportunity. His wife is out of town and so is my husband so I invite him over. When he arrives I am on the bed ready to play. I start out teasing him by making him watch me suck and fuck a dildo. I encourage him to stroke his cock for me. Wait, did I hear something or someone downstairs????