Banging a Teen Girl on the Train

A man traveling home after work on a crowded train finds himself pushed up against a teenage girl. He starts to get excited and the girl doesn't move away, instead she pushes herself harder against him. When the train begins to get less crowded she asks him to follow her to the restroom and lets him fuck her hard. Warning: This is an erotic short story for adults only! All characters are over the age of eighteen and the story contains sex scenes and penetration.