A friend went to get firewood. His wife wanted my sperm. She gave me a public in nature

A friend went to get firewood, leaving me alone with his wife. The forest whispered to us about what might happen, but I just smiled. Her gaze was full of silent invitation, but I knew it was just a game... The rustle of leaves under her husband's feet broke the silence. She stepped aside as if nothing had happened, but something invisible remained hanging in the air between us...