I got all caught up in the moment when my girlfriend’s younger step-sister was telling me what a good guy I am. I couldn’t help but reach out and touch her silky hair as she was paying me compliments and saying how she wishes she could find a guy as good as me. I can’t help it if my hand dropped a little and found her tiny tit. It felt good from what I could tell. She didn’t let me linger there at all but instead quickly excused herself to go study. I just let it drop and figured I would hang in the room until maybe she got curious about just what a good guy I really am and came back for more. I did not expect what came next!