You will be in full-on geek mode when you come across an activity or topic of interest that you are fascinated with. Knowledgeable Mercury in your sign aligned with obsessive Pluto in your house of fun and games can inspire long discussions, loads of research, and endless hours of play. You won’t stop until you feel that you have a grasp on all the ins and outs. You could become similarly enthralled with someone that you are dating or hope to get to know better. Just remember that there’s a fine line between being inquisitive and behaving like a potential stalker.