They were good friends, but Mark had always been attracted to Dave's wife, Sarah. One day, while they were doing laundry together, he couldn't resist her provocative smile anymore. Mark locked eyes with Dave as he slipped his hand into Sarah's panties and began fondling her. Dave's eyes widened in surprise, but before he could react, Mark pulled Sarah onto the washing machine and pushed her against it. She moaned as he entered her tight folds and started pumping away. Dave watched helplessly, torn between his loyalty to his friend and the erotic display before him. As they moved together in a rhythm of lust and desire, Mark couldn't help but think they should do this more often.